CHANGES.md

Synapse 1.7.3 (2019-12-31)
==========================

This release fixes a long-standing bug in the state resolution algorithm.

Bugfixes
--------

- Fix exceptions caused by state resolution choking on malformed events. ([\#6608](https://github.com/matrix-org/synapse/issues/6608))


Synapse 1.7.2 (2019-12-20)
==========================

This release fixes some regressions introduced in Synapse 1.7.0 and 1.7.1.

Bugfixes
--------

- Fix a regression introduced in Synapse 1.7.1 which caused errors when attempting to backfill rooms over federation. ([\#6576](https://github.com/matrix-org/synapse/issues/6576))
- Fix a bug introduced in Synapse 1.7.0 which caused an error on startup when upgrading from versions before 1.3.0. ([\#6578](https://github.com/matrix-org/synapse/issues/6578))


Synapse 1.7.1 (2019-12-18)
==========================

This release includes several security fixes as well as a fix to a bug exposed by the security fixes. Administrators are encouraged to upgrade as soon as possible.

Security updates
----------------

- Fix a bug which could cause room events to be incorrectly authorized using events from a different room. ([\#6501](https://github.com/matrix-org/synapse/issues/6501), [\#6503](https://github.com/matrix-org/synapse/issues/6503), [\#6521](https://github.com/matrix-org/synapse/issues/6521), [\#6524](https://github.com/matrix-org/synapse/issues/6524), [\#6530](https://github.com/matrix-org/synapse/issues/6530), [\#6531](https://github.com/matrix-org/synapse/issues/6531))
- Fix a bug causing responses to the `/context` client endpoint to not use the pruned version of the event. ([\#6553](https://github.com/matrix-org/synapse/issues/6553))
- Fix a cause of state resets in room versions 2 onwards. ([\#6556](https://github.com/matrix-org/synapse/issues/6556), [\#6560](https://github.com/matrix-org/synapse/issues/6560))

Bugfixes
--------

- Fix a bug which could cause the federation server to incorrectly return errors when handling certain obscure event graphs. ([\#6526](https://github.com/matrix-org/synapse/issues/6526), [\#6527](https://github.com/matrix-org/synapse/issues/6527))

Synapse 1.7.0 (2019-12-13)
==========================

This release changes the default settings so that only local authenticated users can query the server's room directory. See the [upgrade notes](UPGRADE.rst#upgrading-to-v170) for details.

Support for SQLite versions before 3.11 is now deprecated. A future release will refuse to start if used with an SQLite version before 3.11.

Administrators are reminded that SQLite should not be used for production instances. Instructions for migrating to Postgres are available [here](docs/postgres.md). A future release of synapse will, by default, disable federation for servers using SQLite.

No significant changes since 1.7.0rc2.


Synapse 1.7.0rc2 (2019-12-11)
=============================

Bugfixes
--------

- Fix incorrect error message for invalid requests when setting user's avatar URL. ([\#6497](https://github.com/matrix-org/synapse/issues/6497))
- Fix support for SQLite 3.7. ([\#6499](https://github.com/matrix-org/synapse/issues/6499))
- Fix regression where sending email push would not work when using a pusher worker. ([\#6507](https://github.com/matrix-org/synapse/issues/6507), [\#6509](https://github.com/matrix-org/synapse/issues/6509))


Synapse 1.7.0rc1 (2019-12-09)
=============================

Features
--------

- Implement per-room message retention policies. ([\#5815](https://github.com/matrix-org/synapse/issues/5815), [\#6436](https://github.com/matrix-org/synapse/issues/6436))
- Add etag and count fields to key backup endpoints to help clients guess if there are new keys. ([\#5858](https://github.com/matrix-org/synapse/issues/5858))
- Add `/admin/v2/users` endpoint with pagination. Contributed by Awesome Technologies Innovationslabor GmbH. ([\#5925](https://github.com/matrix-org/synapse/issues/5925))
- Require User-Interactive Authentication for `/account/3pid/add`, meaning the user's password will be required to add a third-party ID to their account. ([\#6119](https://github.com/matrix-org/synapse/issues/6119))
- Implement the `/_matrix/federation/unstable/net.atleastfornow/state/<context>` API as drafted in MSC2314. ([\#6176](https://github.com/matrix-org/synapse/issues/6176))
- Configure privacy-preserving settings by default for the room directory. ([\#6355](https://github.com/matrix-org/synapse/issues/6355))
- Add ephemeral messages support by partially implementing [MSC2228](https://github.com/matrix-org/matrix-doc/pull/2228). ([\#6409](https://github.com/matrix-org/synapse/issues/6409))
- Add support for [MSC 2367](https://github.com/matrix-org/matrix-doc/pull/2367), which allows specifying a reason on all membership events. ([\#6434](https://github.com/matrix-org/synapse/issues/6434))


Bugfixes
--------

- Transfer non-standard power levels on room upgrade. ([\#6237](https://github.com/matrix-org/synapse/issues/6237))
- Fix error from the Pillow library when uploading RGBA images. ([\#6241](https://github.com/matrix-org/synapse/issues/6241))
- Correctly apply the event filter to the `state`, `events_before` and `events_after` fields in the response to `/context` requests. ([\#6329](https://github.com/matrix-org/synapse/issues/6329))
- Fix caching devices for remote users when using workers, so that we don't attempt to refetch (and potentially fail) each time a user requests devices. ([\#6332](https://github.com/matrix-org/synapse/issues/6332))
- Prevent account data syncs getting lost across TCP replication. ([\#6333](https://github.com/matrix-org/synapse/issues/6333))
- Fix bug: TypeError in `register_user()` while using LDAP auth module. ([\#6406](https://github.com/matrix-org/synapse/issues/6406))
- Fix an intermittent exception when handling read-receipts. ([\#6408](https://github.com/matrix-org/synapse/issues/6408))
- Fix broken guest registration when there are existing blocks of numeric user IDs. ([\#6420](https://github.com/matrix-org/synapse/issues/6420))
- Fix startup error when http proxy is defined. ([\#6421](https://github.com/matrix-org/synapse/issues/6421))
- Fix error when using synapse_port_db on a vanilla synapse db. ([\#6449](https://github.com/matrix-org/synapse/issues/6449))
- Fix uploading multiple cross signing signatures for the same user. ([\#6451](https://github.com/matrix-org/synapse/issues/6451))
- Fix bug which lead to exceptions being thrown in a loop when a cross-signed device is deleted. ([\#6462](https://github.com/matrix-org/synapse/issues/6462))
- Fix `synapse_port_db` not exiting with a 0 code if something went wrong during the port process. ([\#6470](https://github.com/matrix-org/synapse/issues/6470))
- Improve sanity-checking when receiving events over federation. ([\#6472](https://github.com/matrix-org/synapse/issues/6472))
- Fix inaccurate per-block Prometheus metrics. ([\#6491](https://github.com/matrix-org/synapse/issues/6491))
- Fix small performance regression for sending invites. ([\#6493](https://github.com/matrix-org/synapse/issues/6493))
- Back out cross-signing code added in Synapse 1.5.0, which caused a performance regression. ([\#6494](https://github.com/matrix-org/synapse/issues/6494))


Improved Documentation
----------------------

- Update documentation and variables in user contributed systemd reference file. ([\#6369](https://github.com/matrix-org/synapse/issues/6369), [\#6490](https://github.com/matrix-org/synapse/issues/6490))
- Fix link in the user directory documentation. ([\#6388](https://github.com/matrix-org/synapse/issues/6388))
- Add build instructions to the docker readme. ([\#6390](https://github.com/matrix-org/synapse/issues/6390))
- Switch Ubuntu package install recommendation to use python3 packages in INSTALL.md. ([\#6443](https://github.com/matrix-org/synapse/issues/6443))
- Write some docs for the quarantine_media api. ([\#6458](https://github.com/matrix-org/synapse/issues/6458))
- Convert CONTRIBUTING.rst to markdown (among other small fixes). ([\#6461](https://github.com/matrix-org/synapse/issues/6461))


Deprecations and Removals
-------------------------

- Remove admin/v1/users_paginate endpoint. Contributed by Awesome Technologies Innovationslabor GmbH. ([\#5925](https://github.com/matrix-org/synapse/issues/5925))
- Remove fallback for federation with old servers which lack the /federation/v1/state_ids API. ([\#6488](https://github.com/matrix-org/synapse/issues/6488))


Internal Changes
----------------

- Add benchmarks for structured logging and improve output performance. ([\#6266](https://github.com/matrix-org/synapse/issues/6266))
- Improve the performance of outputting structured logging. ([\#6322](https://github.com/matrix-org/synapse/issues/6322))
- Refactor some code in the event authentication path for clarity. ([\#6343](https://github.com/matrix-org/synapse/issues/6343), [\#6468](https://github.com/matrix-org/synapse/issues/6468), [\#6480](https://github.com/matrix-org/synapse/issues/6480))
- Clean up some unnecessary quotation marks around the codebase. ([\#6362](https://github.com/matrix-org/synapse/issues/6362))
- Complain on startup instead of 500'ing during runtime when `public_baseurl` isn't set when necessary. ([\#6379](https://github.com/matrix-org/synapse/issues/6379))
- Add a test scenario to make sure room history purges don't break `/messages` in the future. ([\#6392](https://github.com/matrix-org/synapse/issues/6392))
- Clarifications for the email configuration settings. ([\#6423](https://github.com/matrix-org/synapse/issues/6423))
- Add more tests to the blacklist when running in worker mode. ([\#6429](https://github.com/matrix-org/synapse/issues/6429))
- Refactor data store layer to support multiple databases in the future. ([\#6454](https://github.com/matrix-org/synapse/issues/6454), [\#6464](https://github.com/matrix-org/synapse/issues/6464), [\#6469](https://github.com/matrix-org/synapse/issues/6469), [\#6487](https://github.com/matrix-org/synapse/issues/6487))
- Port synapse.rest.client.v1 to async/await. ([\#6482](https://github.com/matrix-org/synapse/issues/6482))
- Port synapse.rest.client.v2_alpha to async/await. ([\#6483](https://github.com/matrix-org/synapse/issues/6483))
- Port SyncHandler to async/await. ([\#6484](https://github.com/matrix-org/synapse/issues/6484))

Synapse 1.6.1 (2019-11-28)
==========================

Security updates
----------------

This release includes a security fix ([\#6426](https://github.com/matrix-org/synapse/issues/6426), below). Administrators are encouraged to upgrade as soon as possible.

Bugfixes
--------

- Clean up local threepids from user on account deactivation. ([\#6426](https://github.com/matrix-org/synapse/issues/6426))
- Fix startup error when http proxy is defined. ([\#6421](https://github.com/matrix-org/synapse/issues/6421))


Synapse 1.6.0 (2019-11-26)
==========================

Bugfixes
--------

- Fix phone home stats reporting. ([\#6418](https://github.com/matrix-org/synapse/issues/6418))


Synapse 1.6.0rc2 (2019-11-25)
=============================

Bugfixes
--------

- Fix a bug which could cause the background database update hander for event labels to get stuck in a loop raising exceptions. ([\#6407](https://github.com/matrix-org/synapse/issues/6407))


Synapse 1.6.0rc1 (2019-11-20)
=============================

Features
--------

- Add federation support for cross-signing. ([\#5727](https://github.com/matrix-org/synapse/issues/5727))
- Increase default room version from 4 to 5, thereby enforcing server key validity period checks. ([\#6220](https://github.com/matrix-org/synapse/issues/6220))
- Add support for outbound http proxying via http_proxy/HTTPS_PROXY env vars. ([\#6238](https://github.com/matrix-org/synapse/issues/6238))
- Implement label-based filtering on `/sync` and `/messages` ([MSC2326](https://github.com/matrix-org/matrix-doc/pull/2326)). ([\#6301](https://github.com/matrix-org/synapse/issues/6301), [\#6310](https://github.com/matrix-org/synapse/issues/6310), [\#6340](https://github.com/matrix-org/synapse/issues/6340))


Bugfixes
--------

- Fix LruCache callback deduplication for Python 3.8. Contributed by @V02460. ([\#6213](https://github.com/matrix-org/synapse/issues/6213))
- Remove a room from a server's public rooms list on room upgrade. ([\#6232](https://github.com/matrix-org/synapse/issues/6232), [\#6235](https://github.com/matrix-org/synapse/issues/6235))
- Delete keys from key backup when deleting backup versions. ([\#6253](https://github.com/matrix-org/synapse/issues/6253))
- Make notification of cross-signing signatures work with workers. ([\#6254](https://github.com/matrix-org/synapse/issues/6254))
- Fix exception when remote servers attempt to join a room that they're not allowed to join. ([\#6278](https://github.com/matrix-org/synapse/issues/6278))
- Prevent errors from appearing on Synapse startup if `git` is not installed. ([\#6284](https://github.com/matrix-org/synapse/issues/6284))
- Appservice requests will no longer contain a double slash prefix when the appservice url provided ends in a slash. ([\#6306](https://github.com/matrix-org/synapse/issues/6306))
- Fix `/purge_room` admin API. ([\#6307](https://github.com/matrix-org/synapse/issues/6307))
- Fix the `hidden` field in the `devices` table for SQLite versions prior to 3.23.0. ([\#6313](https://github.com/matrix-org/synapse/issues/6313))
- Fix bug which casued rejected events to be persisted with the wrong room state. ([\#6320](https://github.com/matrix-org/synapse/issues/6320))
- Fix bug where `rc_login` ratelimiting would prematurely kick in. ([\#6335](https://github.com/matrix-org/synapse/issues/6335))
- Prevent the server taking a long time to start up when guest registration is enabled. ([\#6338](https://github.com/matrix-org/synapse/issues/6338))
- Fix bug where upgrading a guest account to a full user would fail when account validity is enabled. ([\#6359](https://github.com/matrix-org/synapse/issues/6359))
- Fix `to_device` stream ID getting reset every time Synapse restarts, which had the potential to cause unable to decrypt errors. ([\#6363](https://github.com/matrix-org/synapse/issues/6363))
- Fix permission denied error when trying to generate a config file with the docker image. ([\#6389](https://github.com/matrix-org/synapse/issues/6389))


Improved Documentation
----------------------

- Contributor documentation now mentions script to run linters. ([\#6164](https://github.com/matrix-org/synapse/issues/6164))
- Modify CAPTCHA_SETUP.md to update the terms `private key` and `public key` to `secret key` and `site key` respectively. Contributed by Yash Jipkate. ([\#6257](https://github.com/matrix-org/synapse/issues/6257))
- Update `INSTALL.md` Email section to talk about `account_threepid_delegates`. ([\#6272](https://github.com/matrix-org/synapse/issues/6272))
- Fix a small typo in `account_threepid_delegates` configuration option. ([\#6273](https://github.com/matrix-org/synapse/issues/6273))


Internal Changes
----------------

- Add a CI job to test the `synapse_port_db` script. ([\#6140](https://github.com/matrix-org/synapse/issues/6140), [\#6276](https://github.com/matrix-org/synapse/issues/6276))
- Convert EventContext to an attrs. ([\#6218](https://github.com/matrix-org/synapse/issues/6218))
- Move `persist_events` out from main data store. ([\#6240](https://github.com/matrix-org/synapse/issues/6240), [\#6300](https://github.com/matrix-org/synapse/issues/6300))
- Reduce verbosity of user/room stats. ([\#6250](https://github.com/matrix-org/synapse/issues/6250))
- Reduce impact of debug logging. ([\#6251](https://github.com/matrix-org/synapse/issues/6251))
- Expose some homeserver functionality to spam checkers. ([\#6259](https://github.com/matrix-org/synapse/issues/6259))
- Change cache descriptors to always return deferreds. ([\#6263](https://github.com/matrix-org/synapse/issues/6263), [\#6291](https://github.com/matrix-org/synapse/issues/6291))
- Fix incorrect comment regarding the functionality of an `if` statement. ([\#6269](https://github.com/matrix-org/synapse/issues/6269))
- Update CI to run `isort` over the `scripts` and `scripts-dev` directories. ([\#6270](https://github.com/matrix-org/synapse/issues/6270))
- Replace every instance of `logger.warn` method with `logger.warning` as the former is deprecated. ([\#6271](https://github.com/matrix-org/synapse/issues/6271), [\#6314](https://github.com/matrix-org/synapse/issues/6314))
- Port replication http server endpoints to async/await. ([\#6274](https://github.com/matrix-org/synapse/issues/6274))
- Port room rest handlers to async/await. ([\#6275](https://github.com/matrix-org/synapse/issues/6275))
- Remove redundant CLI parameters on CI's `flake8` step. ([\#6277](https://github.com/matrix-org/synapse/issues/6277))
- Port `federation_server.py` to async/await. ([\#6279](https://github.com/matrix-org/synapse/issues/6279))
- Port receipt and read markers to async/wait. ([\#6280](https://github.com/matrix-org/synapse/issues/6280))
- Split out state storage into separate data store. ([\#6294](https://github.com/matrix-org/synapse/issues/6294), [\#6295](https://github.com/matrix-org/synapse/issues/6295))
- Refactor EventContext for clarity. ([\#6298](https://github.com/matrix-org/synapse/issues/6298))
- Update the version of black used to 19.10b0. ([\#6304](https://github.com/matrix-org/synapse/issues/6304))
- Add some documentation about worker replication. ([\#6305](https://github.com/matrix-org/synapse/issues/6305))
- Move admin endpoints into separate files. Contributed by Awesome Technologies Innovationslabor GmbH. ([\#6308](https://github.com/matrix-org/synapse/issues/6308))
- Document the use of `lint.sh` for code style enforcement & extend it to run on specified paths only. ([\#6312](https://github.com/matrix-org/synapse/issues/6312))
- Add optional python dependencies and dependant binary libraries to snapcraft packaging. ([\#6317](https://github.com/matrix-org/synapse/issues/6317))
- Remove the dependency on psutil and replace functionality with the stdlib `resource` module. ([\#6318](https://github.com/matrix-org/synapse/issues/6318), [\#6336](https://github.com/matrix-org/synapse/issues/6336))
- Improve documentation for EventContext fields. ([\#6319](https://github.com/matrix-org/synapse/issues/6319))
- Add some checks that we aren't using state from rejected events. ([\#6330](https://github.com/matrix-org/synapse/issues/6330))
- Add continuous integration for python 3.8. ([\#6341](https://github.com/matrix-org/synapse/issues/6341))
- Correct spacing/case of various instances of the word "homeserver". ([\#6357](https://github.com/matrix-org/synapse/issues/6357))
- Temporarily blacklist the failing unit test PurgeRoomTestCase.test_purge_room. ([\#6361](https://github.com/matrix-org/synapse/issues/6361))


Synapse 1.5.1 (2019-11-06)
==========================

Features
--------

- Limit the length of data returned by url previews, to prevent DoS attacks. ([\#6331](https://github.com/matrix-org/synapse/issues/6331), [\#6334](https://github.com/matrix-org/synapse/issues/6334))


Synapse 1.5.0 (2019-10-29)
==========================

Security updates
----------------

This release includes a security fix ([\#6262](https://github.com/matrix-org/synapse/issues/6262), below). Administrators are encouraged to upgrade as soon as possible.

Bugfixes
--------

- Fix bug where room directory search was case sensitive. ([\#6268](https://github.com/matrix-org/synapse/issues/6268))


Synapse 1.5.0rc2 (2019-10-28)
=============================

Bugfixes
--------

- Update list of boolean columns in `synapse_port_db`. ([\#6247](https://github.com/matrix-org/synapse/issues/6247))
- Fix /keys/query API on workers. ([\#6256](https://github.com/matrix-org/synapse/issues/6256))
- Improve signature checking on some federation APIs. ([\#6262](https://github.com/matrix-org/synapse/issues/6262))


Internal Changes
----------------

- Move schema delta files to the correct data store. ([\#6248](https://github.com/matrix-org/synapse/issues/6248))
- Small performance improvement by removing repeated config lookups in room stats calculation. ([\#6255](https://github.com/matrix-org/synapse/issues/6255))


Synapse 1.5.0rc1 (2019-10-24)
==========================

Features
--------

- Improve quality of thumbnails for 1-bit/8-bit color palette images. ([\#2142](https://github.com/matrix-org/synapse/issues/2142))
- Add ability to upload cross-signing signatures. ([\#5726](https://github.com/matrix-org/synapse/issues/5726))
- Allow uploading of cross-signing keys. ([\#5769](https://github.com/matrix-org/synapse/issues/5769))
- CAS login now provides a default display name for users if a `displayname_attribute` is set in the configuration file. ([\#6114](https://github.com/matrix-org/synapse/issues/6114))
- Reject all pending invites for a user during deactivation. ([\#6125](https://github.com/matrix-org/synapse/issues/6125))
- Add config option to suppress client side resource limit alerting. ([\#6173](https://github.com/matrix-org/synapse/issues/6173))


Bugfixes
--------

- Return an HTTP 404 instead of 400 when requesting a filter by ID that is unknown to the server. Thanks to @krombel for contributing this! ([\#2380](https://github.com/matrix-org/synapse/issues/2380))
- Fix a bug where users could be invited twice to the same group. ([\#3436](https://github.com/matrix-org/synapse/issues/3436))
- Fix `/createRoom` failing with badly-formatted MXIDs in the invitee list. Thanks to @wener291! ([\#4088](https://github.com/matrix-org/synapse/issues/4088))
- Make the `synapse_port_db` script create the right indexes on a new PostgreSQL database. ([\#6102](https://github.com/matrix-org/synapse/issues/6102), [\#6178](https://github.com/matrix-org/synapse/issues/6178), [\#6243](https://github.com/matrix-org/synapse/issues/6243))
- Fix bug when uploading a large file: Synapse responds with `M_UNKNOWN` while it should be `M_TOO_LARGE` according to spec. Contributed by Anshul Angaria. ([\#6109](https://github.com/matrix-org/synapse/issues/6109))
- Fix user push rules being deleted from a room when it is upgraded. ([\#6144](https://github.com/matrix-org/synapse/issues/6144))
- Don't 500 when trying to exchange a revoked 3PID invite. ([\#6147](https://github.com/matrix-org/synapse/issues/6147))
- Fix transferring notifications and tags when joining an upgraded room that is new to your server. ([\#6155](https://github.com/matrix-org/synapse/issues/6155))
- Fix bug where guest account registration can wedge after restart. ([\#6161](https://github.com/matrix-org/synapse/issues/6161))
- Fix monthly active user reaping when reserved users are specified. ([\#6168](https://github.com/matrix-org/synapse/issues/6168))
- Fix `/federation/v1/state` endpoint not supporting newer room versions. ([\#6170](https://github.com/matrix-org/synapse/issues/6170))
- Fix bug where we were updating censored events as bytes rather than text, occaisonally causing invalid JSON being inserted breaking APIs that attempted to fetch such events. ([\#6186](https://github.com/matrix-org/synapse/issues/6186))
- Fix occasional missed updates in the room and user directories. ([\#6187](https://github.com/matrix-org/synapse/issues/6187))
- Fix tracing of non-JSON APIs, `/media`, `/key` etc. ([\#6195](https://github.com/matrix-org/synapse/issues/6195))
- Fix bug where presence would not get timed out correctly if a synchrotron worker is used and restarted. ([\#6212](https://github.com/matrix-org/synapse/issues/6212))
- synapse_port_db: Add 2 additional BOOLEAN_COLUMNS to be able to convert from database schema v56. ([\#6216](https://github.com/matrix-org/synapse/issues/6216))
- Fix a bug where the Synapse demo script blacklisted `::1` (ipv6 localhost) from receiving federation traffic. ([\#6229](https://github.com/matrix-org/synapse/issues/6229))


Updates to the Docker image
---------------------------

- Fix logging getting lost for the docker image. ([\#6197](https://github.com/matrix-org/synapse/issues/6197))


Internal Changes
----------------

- Update `user_filters` table to have a unique index, and non-null columns. Thanks to @pik for contributing this. ([\#1172](https://github.com/matrix-org/synapse/issues/1172), [\#6175](https://github.com/matrix-org/synapse/issues/6175), [\#6184](https://github.com/matrix-org/synapse/issues/6184))
- Allow devices to be marked as hidden, for use by features such as cross-signing.
  This adds a new field with a default value to the devices field in the database,
  and so the database upgrade may take a long time depending on how many devices
  are in the database. ([\#5759](https://github.com/matrix-org/synapse/issues/5759))
- Move lookup-related functions from RoomMemberHandler to IdentityHandler. ([\#5978](https://github.com/matrix-org/synapse/issues/5978))
- Improve performance of the public room list directory. ([\#6019](https://github.com/matrix-org/synapse/issues/6019), [\#6152](https://github.com/matrix-org/synapse/issues/6152), [\#6153](https://github.com/matrix-org/synapse/issues/6153), [\#6154](https://github.com/matrix-org/synapse/issues/6154))
- Edit header dicts docstrings in `SimpleHttpClient` to note that `str` or `bytes` can be passed as header keys. ([\#6077](https://github.com/matrix-org/synapse/issues/6077))
- Add snapcraft packaging information. Contributed by @devec0. ([\#6084](https://github.com/matrix-org/synapse/issues/6084), [\#6191](https://github.com/matrix-org/synapse/issues/6191))
- Kill off half-implemented password-reset via sms. ([\#6101](https://github.com/matrix-org/synapse/issues/6101))
- Remove `get_user_by_req` opentracing span and add some tags. ([\#6108](https://github.com/matrix-org/synapse/issues/6108))
- Drop some unused database tables. ([\#6115](https://github.com/matrix-org/synapse/issues/6115))
- Add env var to turn on tracking of log context changes. ([\#6127](https://github.com/matrix-org/synapse/issues/6127))
- Refactor configuration loading to allow better typechecking. ([\#6137](https://github.com/matrix-org/synapse/issues/6137))
- Log responder when responding to media request. ([\#6139](https://github.com/matrix-org/synapse/issues/6139))
- Improve performance of `find_next_generated_user_id` DB query. ([\#6148](https://github.com/matrix-org/synapse/issues/6148))
- Expand type-checking on modules imported by `synapse.config`. ([\#6150](https://github.com/matrix-org/synapse/issues/6150))
- Use Postgres ANY for selecting many values. ([\#6156](https://github.com/matrix-org/synapse/issues/6156))
- Add more caching to `_get_joined_users_from_context` DB query. ([\#6159](https://github.com/matrix-org/synapse/issues/6159))
- Add some metrics on the federation sender. ([\#6160](https://github.com/matrix-org/synapse/issues/6160))
- Add some logging to the rooms stats updates, to try to track down a flaky test. ([\#6167](https://github.com/matrix-org/synapse/issues/6167))
- Remove unused `timeout` parameter from `_get_public_room_list`. ([\#6179](https://github.com/matrix-org/synapse/issues/6179))
- Reject (accidental) attempts to insert bytes into postgres tables. ([\#6186](https://github.com/matrix-org/synapse/issues/6186))
- Make `version` optional in body of `PUT /room_keys/version/{version}`, since it's redundant. ([\#6189](https://github.com/matrix-org/synapse/issues/6189))
- Make storage layer responsible for adding device names to key, rather than the handler. ([\#6193](https://github.com/matrix-org/synapse/issues/6193))
- Port `synapse.rest.admin` module to use async/await. ([\#6196](https://github.com/matrix-org/synapse/issues/6196))
- Enforce that all boolean configuration values are lowercase in CI. ([\#6203](https://github.com/matrix-org/synapse/issues/6203))
- Remove some unused event-auth code. ([\#6214](https://github.com/matrix-org/synapse/issues/6214))
- Remove `Auth.check` method. ([\#6217](https://github.com/matrix-org/synapse/issues/6217))
- Remove `format_tap.py` script in favour of a perl reimplementation in Sytest's repo. ([\#6219](https://github.com/matrix-org/synapse/issues/6219))
- Refactor storage layer in preparation to support having multiple databases. ([\#6231](https://github.com/matrix-org/synapse/issues/6231))
- Remove some extra quotation marks across the codebase. ([\#6236](https://github.com/matrix-org/synapse/issues/6236))


Synapse 1.4.1 (2019-10-18)
==========================

No changes since 1.4.1rc1.


Synapse 1.4.1rc1 (2019-10-17)
=============================

Bugfixes
--------

- Fix bug where redacted events were sometimes incorrectly censored in the database, breaking APIs that attempted to fetch such events. ([\#6185](https://github.com/matrix-org/synapse/issues/6185), [5b0e9948](https://github.com/matrix-org/synapse/commit/5b0e9948eaae801643e594b5abc8ee4b10bd194e))

Synapse 1.4.0 (2019-10-03)
==========================

Bugfixes
--------

- Redact `client_secret` in server logs. ([\#6158](https://github.com/matrix-org/synapse/issues/6158))


Synapse 1.4.0rc2 (2019-10-02)
=============================

Bugfixes
--------

- Fix bug in background update that adds last seen information to the `devices` table, and improve its performance on Postgres. ([\#6135](https://github.com/matrix-org/synapse/issues/6135))
- Fix bad performance of censoring redactions background task. ([\#6141](https://github.com/matrix-org/synapse/issues/6141))
- Fix fetching censored redactions from DB, which caused APIs like initial sync to fail if it tried to include the censored redaction. ([\#6145](https://github.com/matrix-org/synapse/issues/6145))
- Fix exceptions when storing large retry intervals for down remote servers. ([\#6146](https://github.com/matrix-org/synapse/issues/6146))


Internal Changes
----------------

- Fix up sample config entry for `redaction_retention_period` option. ([\#6117](https://github.com/matrix-org/synapse/issues/6117))


Synapse 1.4.0rc1 (2019-09-26)
=============================

Note that this release includes significant changes around 3pid
verification. Administrators are reminded to review the [upgrade notes](UPGRADE.rst#upgrading-to-v140).

Features
--------

- Changes to 3pid verification:
  - Add the ability to send registration emails from the homeserver rather than delegating to an identity server. ([\#5835](https://github.com/matrix-org/synapse/issues/5835), [\#5940](https://github.com/matrix-org/synapse/issues/5940), [\#5993](https://github.com/matrix-org/synapse/issues/5993), [\#5994](https://github.com/matrix-org/synapse/issues/5994), [\#5868](https://github.com/matrix-org/synapse/issues/5868))
  - Replace `trust_identity_server_for_password_resets` config option with `account_threepid_delegates`, and make the `id_server` parameteter optional on `*/requestToken` endpoints, as per [MSC2263](https://github.com/matrix-org/matrix-doc/pull/2263). ([\#5876](https://github.com/matrix-org/synapse/issues/5876), [\#5969](https://github.com/matrix-org/synapse/issues/5969), [\#6028](https://github.com/matrix-org/synapse/issues/6028))
  - Switch to using the v2 Identity Service `/lookup` API where available, with fallback to v1. (Implements [MSC2134](https://github.com/matrix-org/matrix-doc/pull/2134) plus `id_access_token authentication` for v2 Identity Service APIs from [MSC2140](https://github.com/matrix-org/matrix-doc/pull/2140)). ([\#5897](https://github.com/matrix-org/synapse/issues/5897))
  - Remove `bind_email` and `bind_msisdn` parameters from `/register` ala [MSC2140](https://github.com/matrix-org/matrix-doc/pull/2140). ([\#5964](https://github.com/matrix-org/synapse/issues/5964))
  - Add `m.id_access_token` to `unstable_features` in `/versions` as per [MSC2264](https://github.com/matrix-org/matrix-doc/pull/2264). ([\#5974](https://github.com/matrix-org/synapse/issues/5974))
  - Use the v2 Identity Service API for 3PID invites. ([\#5979](https://github.com/matrix-org/synapse/issues/5979))
  - Add `POST /_matrix/client/unstable/account/3pid/unbind` endpoint from [MSC2140](https://github.com/matrix-org/matrix-doc/pull/2140) for unbinding a 3PID from an identity server without removing it from the homeserver user account. ([\#5980](https://github.com/matrix-org/synapse/issues/5980), [\#6062](https://github.com/matrix-org/synapse/issues/6062))
  - Use `account_threepid_delegate.email` and `account_threepid_delegate.msisdn` for validating threepid sessions. ([\#6011](https://github.com/matrix-org/synapse/issues/6011))
  - Allow homeserver to handle or delegate email validation when adding an email to a user's account. ([\#6042](https://github.com/matrix-org/synapse/issues/6042))
  - Implement new Client Server API endpoints `/account/3pid/add` and `/account/3pid/bind` as per [MSC2290](https://github.com/matrix-org/matrix-doc/pull/2290). ([\#6043](https://github.com/matrix-org/synapse/issues/6043))
  - Add an unstable feature flag for separate add/bind 3pid APIs. ([\#6044](https://github.com/matrix-org/synapse/issues/6044))
  - Remove `bind` parameter from Client Server POST `/account` endpoint as per [MSC2290](https://github.com/matrix-org/matrix-doc/pull/2290/). ([\#6067](https://github.com/matrix-org/synapse/issues/6067))
  - Add `POST /add_threepid/msisdn/submit_token` endpoint for proxying submitToken on an `account_threepid_handler`. ([\#6078](https://github.com/matrix-org/synapse/issues/6078))
  - Add `submit_url` response parameter to `*/msisdn/requestToken` endpoints. ([\#6079](https://github.com/matrix-org/synapse/issues/6079))
  - Add `m.require_identity_server` flag to /version's unstable_features. ([\#5972](https://github.com/matrix-org/synapse/issues/5972))
- Enhancements to OpenTracing support:
  - Make OpenTracing work in worker mode. ([\#5771](https://github.com/matrix-org/synapse/issues/5771))
  - Pass OpenTracing contexts between servers when transmitting EDUs. ([\#5852](https://github.com/matrix-org/synapse/issues/5852))
  - OpenTracing for device list updates. ([\#5853](https://github.com/matrix-org/synapse/issues/5853))
  - Add a tag recording a request's authenticated entity and corresponding servlet in OpenTracing. ([\#5856](https://github.com/matrix-org/synapse/issues/5856))
  - Add minimum OpenTracing for client servlets. ([\#5983](https://github.com/matrix-org/synapse/issues/5983))
  - Check at setup that OpenTracing is installed if it's enabled in the config. ([\#5985](https://github.com/matrix-org/synapse/issues/5985))
  - Trace replication send times. ([\#5986](https://github.com/matrix-org/synapse/issues/5986))
  - Include missing OpenTracing contexts in outbout replication requests. ([\#5982](https://github.com/matrix-org/synapse/issues/5982))
  - Fix sending of EDUs when OpenTracing is enabled with an empty whitelist. ([\#5984](https://github.com/matrix-org/synapse/issues/5984))
  - Fix invalid references to None while OpenTracing if the log context slips. ([\#5988](https://github.com/matrix-org/synapse/issues/5988), [\#5991](https://github.com/matrix-org/synapse/issues/5991))
  - OpenTracing for room and e2e keys. ([\#5855](https://github.com/matrix-org/synapse/issues/5855))
  - Add OpenTracing span over HTTP push processing. ([\#6003](https://github.com/matrix-org/synapse/issues/6003))
- Add an admin API to purge old rooms from the database. ([\#5845](https://github.com/matrix-org/synapse/issues/5845))
- Retry well-known lookups if we have recently seen a valid well-known record for the server. ([\#5850](https://github.com/matrix-org/synapse/issues/5850))
- Add support for filtered room-directory search requests over federation ([MSC2197](https://github.com/matrix-org/matrix-doc/pull/2197), in order to allow upcoming room directory query performance improvements. ([\#5859](https://github.com/matrix-org/synapse/issues/5859))
- Correctly retry all hosts returned from SRV when we fail to connect. ([\#5864](https://github.com/matrix-org/synapse/issues/5864))
- Add admin API endpoint for setting whether or not a user is a server administrator. ([\#5878](https://github.com/matrix-org/synapse/issues/5878))
- Enable cleaning up extremities with dummy events by default to prevent undue build up of forward extremities. ([\#5884](https://github.com/matrix-org/synapse/issues/5884))
- Add config option to sign remote key query responses with a separate key. ([\#5895](https://github.com/matrix-org/synapse/issues/5895))
- Add support for config templating. ([\#5900](https://github.com/matrix-org/synapse/issues/5900))
- Users with the type of "support" or "bot" are no longer required to consent. ([\#5902](https://github.com/matrix-org/synapse/issues/5902))
- Let synctl accept a directory of config files. ([\#5904](https://github.com/matrix-org/synapse/issues/5904))
- Increase max display name size to 256. ([\#5906](https://github.com/matrix-org/synapse/issues/5906))
- Add admin API endpoint for getting whether or not a user is a server administrator. ([\#5914](https://github.com/matrix-org/synapse/issues/5914))
- Redact events in the database that have been redacted for a week. ([\#5934](https://github.com/matrix-org/synapse/issues/5934))
- New prometheus metrics:
  - `synapse_federation_known_servers`: represents the total number of servers your server knows about (i.e. is in rooms with), including itself. Enable by setting `metrics_flags.known_servers` to True in the configuration.([\#5981](https://github.com/matrix-org/synapse/issues/5981))
  - `synapse_build_info`: exposes the Python version, OS version, and Synapse version of the running server. ([\#6005](https://github.com/matrix-org/synapse/issues/6005))
- Give appropriate exit codes when synctl fails. ([\#5992](https://github.com/matrix-org/synapse/issues/5992))
- Apply the federation blacklist to requests to identity servers. ([\#6000](https://github.com/matrix-org/synapse/issues/6000))
- Add `report_stats_endpoint` option to configure where stats are reported to, if enabled. Contributed by @Sorunome. ([\#6012](https://github.com/matrix-org/synapse/issues/6012))
- Add config option to increase ratelimits for room admins redacting messages. ([\#6015](https://github.com/matrix-org/synapse/issues/6015))
- Stop sending federation transactions to servers which have been down for a long time. ([\#6026](https://github.com/matrix-org/synapse/issues/6026))
- Make the process for mapping SAML2 users to matrix IDs more flexible. ([\#6037](https://github.com/matrix-org/synapse/issues/6037))
- Return a clearer error message when a timeout occurs when attempting to contact an identity server. ([\#6073](https://github.com/matrix-org/synapse/issues/6073))
- Prevent password reset's submit_token endpoint from accepting trailing slashes. ([\#6074](https://github.com/matrix-org/synapse/issues/6074))
- Return 403 on `/register/available` if registration has been disabled. ([\#6082](https://github.com/matrix-org/synapse/issues/6082))
- Explicitly log when a homeserver does not have the `trusted_key_servers` config field configured. ([\#6090](https://github.com/matrix-org/synapse/issues/6090))
- Add support for pruning old rows in `user_ips` table. ([\#6098](https://github.com/matrix-org/synapse/issues/6098))

Bugfixes
--------

- Don't create broken room when `power_level_content_override.users` does not contain `creator_id`. ([\#5633](https://github.com/matrix-org/synapse/issues/5633))
- Fix database index so that different backup versions can have the same sessions. ([\#5857](https://github.com/matrix-org/synapse/issues/5857))
- Fix Synapse looking for config options `password_reset_failure_template` and `password_reset_success_template`, when they are actually `password_reset_template_failure_html`, `password_reset_template_success_html`. ([\#5863](https://github.com/matrix-org/synapse/issues/5863))
- Fix stack overflow when recovering an appservice which had an outage. ([\#5885](https://github.com/matrix-org/synapse/issues/5885))
- Fix error message which referred to `public_base_url` instead of `public_baseurl`. Thanks to @aaronraimist for the fix! ([\#5909](https://github.com/matrix-org/synapse/issues/5909))
- Fix 404 for thumbnail download when `dynamic_thumbnails` is `false` and the thumbnail was dynamically generated. Fix reported by rkfg. ([\#5915](https://github.com/matrix-org/synapse/issues/5915))
- Fix a cache-invalidation bug for worker-based deployments. ([\#5920](https://github.com/matrix-org/synapse/issues/5920))
- Fix admin API for listing media in a room not being available with an external media repo. ([\#5966](https://github.com/matrix-org/synapse/issues/5966))
- Fix list media admin API always returning an error. ([\#5967](https://github.com/matrix-org/synapse/issues/5967))
- Fix room and user stats tracking. ([\#5971](https://github.com/matrix-org/synapse/issues/5971), [\#5998](https://github.com/matrix-org/synapse/issues/5998), [\#6029](https://github.com/matrix-org/synapse/issues/6029))
- Return a `M_MISSING_PARAM` if `sid` is not provided to `/account/3pid`. ([\#5995](https://github.com/matrix-org/synapse/issues/5995))
- `federation_certificate_verification_whitelist` now will not cause `TypeErrors` to be raised (a regression in 1.3). Additionally, it now supports internationalised domain names in their non-canonical representation. ([\#5996](https://github.com/matrix-org/synapse/issues/5996))
- Only count real users when checking for auto-creation of auto-join room. ([\#6004](https://github.com/matrix-org/synapse/issues/6004))
- Ensure support users can be registered even if MAU limit is reached. ([\#6020](https://github.com/matrix-org/synapse/issues/6020))
- Fix bug where login error was shown incorrectly on SSO fallback login. ([\#6024](https://github.com/matrix-org/synapse/issues/6024))
- Fix bug in calculating the federation retry backoff period. ([\#6025](https://github.com/matrix-org/synapse/issues/6025))
- Prevent exceptions being logged when extremity-cleanup events fail due to lack of user consent to the terms of service. ([\#6053](https://github.com/matrix-org/synapse/issues/6053))
- Remove POST method from password-reset `submit_token` endpoint until we implement `submit_url` functionality. ([\#6056](https://github.com/matrix-org/synapse/issues/6056))
- Fix logcontext spam on non-Linux platforms. ([\#6059](https://github.com/matrix-org/synapse/issues/6059))
- Ensure query parameters in email validation links are URL-encoded. ([\#6063](https://github.com/matrix-org/synapse/issues/6063))
- Fix a bug which caused SAML attribute maps to be overridden by defaults. ([\#6069](https://github.com/matrix-org/synapse/issues/6069))
- Fix the logged number of updated items for the `users_set_deactivated_flag` background update. ([\#6092](https://github.com/matrix-org/synapse/issues/6092))
- Add `sid` to `next_link` for email validation. ([\#6097](https://github.com/matrix-org/synapse/issues/6097))
- Threepid validity checks on msisdns should not be dependent on `threepid_behaviour_email`. ([\#6104](https://github.com/matrix-org/synapse/issues/6104))
- Ensure that servers which are not configured to support email address verification do not offer it in the registration flows. ([\#6107](https://github.com/matrix-org/synapse/issues/6107))


Updates to the Docker image
---------------------------

- Avoid changing `UID/GID` if they are already correct. ([\#5970](https://github.com/matrix-org/synapse/issues/5970))
- Provide `SYNAPSE_WORKER` envvar to specify python module. ([\#6058](https://github.com/matrix-org/synapse/issues/6058))


Improved Documentation
----------------------

- Convert documentation to markdown (from rst) ([\#5849](https://github.com/matrix-org/synapse/issues/5849))
- Update `INSTALL.md` to say that Python 2 is no longer supported. ([\#5953](https://github.com/matrix-org/synapse/issues/5953))
- Add developer documentation for using SAML2. ([\#6032](https://github.com/matrix-org/synapse/issues/6032))
- Add some notes on rolling back to v1.3.1. ([\#6049](https://github.com/matrix-org/synapse/issues/6049))
- Update the upgrade notes. ([\#6050](https://github.com/matrix-org/synapse/issues/6050))


Deprecations and Removals
-------------------------

- Remove shared-secret registration from `/_matrix/client/r0/register` endpoint. Contributed by Awesome Technologies Innovationslabor GmbH. ([\#5877](https://github.com/matrix-org/synapse/issues/5877))
- Deprecate the `trusted_third_party_id_servers` option. ([\#5875](https://github.com/matrix-org/synapse/issues/5875))


Internal Changes
----------------

- Lay the groundwork for structured logging output. ([\#5680](https://github.com/matrix-org/synapse/issues/5680))
- Retry well-known lookup before the cache expires, giving a grace period where the remote well-known can be down but we still use the old result. ([\#5844](https://github.com/matrix-org/synapse/issues/5844))
- Remove log line for debugging issue #5407. ([\#5860](https://github.com/matrix-org/synapse/issues/5860))
- Refactor the Appservice scheduler code. ([\#5886](https://github.com/matrix-org/synapse/issues/5886))
- Compatibility with v2 Identity Service APIs other than /lookup. ([\#5892](https://github.com/matrix-org/synapse/issues/5892), [\#6013](https://github.com/matrix-org/synapse/issues/6013))
- Stop populating some unused tables. ([\#5893](https://github.com/matrix-org/synapse/issues/5893), [\#6047](https://github.com/matrix-org/synapse/issues/6047))
- Add missing index on `users_in_public_rooms` to improve the performance of directory queries. ([\#5894](https://github.com/matrix-org/synapse/issues/5894))
- Improve the logging when we have an error when fetching signing keys. ([\#5896](https://github.com/matrix-org/synapse/issues/5896))
- Add support for database engine-specific schema deltas, based on file extension. ([\#5911](https://github.com/matrix-org/synapse/issues/5911))
- Update Buildkite pipeline to use plugins instead of buildkite-agent commands. ([\#5922](https://github.com/matrix-org/synapse/issues/5922))
- Add link in sample config to the logging config schema. ([\#5926](https://github.com/matrix-org/synapse/issues/5926))
- Remove unnecessary parentheses in return statements. ([\#5931](https://github.com/matrix-org/synapse/issues/5931))
- Remove unused `jenkins/prepare_sytest.sh` file. ([\#5938](https://github.com/matrix-org/synapse/issues/5938))
- Move Buildkite pipeline config to the pipelines repo. ([\#5943](https://github.com/matrix-org/synapse/issues/5943))
- Remove unnecessary return statements in the codebase which were the result of a regex run. ([\#5962](https://github.com/matrix-org/synapse/issues/5962))
- Remove left-over methods from v1 registration API. ([\#5963](https://github.com/matrix-org/synapse/issues/5963))
- Cleanup event auth type initialisation. ([\#5975](https://github.com/matrix-org/synapse/issues/5975))
- Clean up dependency checking at setup. ([\#5989](https://github.com/matrix-org/synapse/issues/5989))
- Update OpenTracing docs to use the unified `trace` method. ([\#5776](https://github.com/matrix-org/synapse/issues/5776))
- Small refactor of function arguments and docstrings in` RoomMemberHandler`. ([\#6009](https://github.com/matrix-org/synapse/issues/6009))
- Remove unused `origin` argument on `FederationHandler.add_display_name_to_third_party_invite`. ([\#6010](https://github.com/matrix-org/synapse/issues/6010))
- Add a `failure_ts` column to the `destinations` database table. ([\#6016](https://github.com/matrix-org/synapse/issues/6016), [\#6072](https://github.com/matrix-org/synapse/issues/6072))
- Clean up some code in the retry logic. ([\#6017](https://github.com/matrix-org/synapse/issues/6017))
- Fix the structured logging tests stomping on the global log configuration for subsequent tests. ([\#6023](https://github.com/matrix-org/synapse/issues/6023))
- Clean up the sample config for SAML authentication. ([\#6064](https://github.com/matrix-org/synapse/issues/6064))
- Change mailer logging to reflect Synapse doesn't just do chat notifications by email now. ([\#6075](https://github.com/matrix-org/synapse/issues/6075))
- Move last-seen info into devices table. ([\#6089](https://github.com/matrix-org/synapse/issues/6089))
- Remove unused parameter to `get_user_id_by_threepid`. ([\#6099](https://github.com/matrix-org/synapse/issues/6099))
- Refactor the user-interactive auth handling. ([\#6105](https://github.com/matrix-org/synapse/issues/6105))
- Refactor code for calculating registration flows. ([\#6106](https://github.com/matrix-org/synapse/issues/6106))


Synapse 1.3.1 (2019-08-17)
==========================

Features
--------

- Drop hard dependency on `sdnotify` python package. ([\#5871](https://github.com/matrix-org/synapse/issues/5871))


Bugfixes
--------

- Fix startup issue (hang on ACME provisioning) due to ordering of Twisted reactor startup. Thanks to @chrismoos for supplying the fix. ([\#5867](https://github.com/matrix-org/synapse/issues/5867))


Synapse 1.3.0 (2019-08-15)
==========================

Bugfixes
--------

- Fix 500 Internal Server Error on `publicRooms` when the public room list was
  cached. ([\#5851](https://github.com/matrix-org/synapse/issues/5851))


Synapse 1.3.0rc1 (2019-08-13)
==========================

Features
--------

- Use `M_USER_DEACTIVATED` instead of `M_UNKNOWN` for errcode when a deactivated user attempts to login. ([\#5686](https://github.com/matrix-org/synapse/issues/5686))
- Add sd_notify hooks to ease systemd integration and allows usage of Type=Notify. ([\#5732](https://github.com/matrix-org/synapse/issues/5732))
- Synapse will no longer serve any media repo admin endpoints when `enable_media_repo` is set to False in the configuration. If a media repo worker is used, the admin APIs relating to the media repo will be served from it instead. ([\#5754](https://github.com/matrix-org/synapse/issues/5754), [\#5848](https://github.com/matrix-org/synapse/issues/5848))
- Synapse can now be configured to not join remote rooms of a given "complexity" (currently, state events) over federation. This option can be used to prevent adverse performance on resource-constrained homeservers. ([\#5783](https://github.com/matrix-org/synapse/issues/5783))
- Allow defining HTML templates to serve the user on account renewal attempt when using the account validity feature. ([\#5807](https://github.com/matrix-org/synapse/issues/5807))


Bugfixes
--------

- Fix UISIs during homeserver outage. ([\#5693](https://github.com/matrix-org/synapse/issues/5693), [\#5789](https://github.com/matrix-org/synapse/issues/5789))
- Fix stack overflow in server key lookup code. ([\#5724](https://github.com/matrix-org/synapse/issues/5724))
- start.sh no longer uses deprecated cli option. ([\#5725](https://github.com/matrix-org/synapse/issues/5725))
- Log when we receive an event receipt from an unexpected origin. ([\#5743](https://github.com/matrix-org/synapse/issues/5743))
- Fix debian packaging scripts to correctly build sid packages. ([\#5775](https://github.com/matrix-org/synapse/issues/5775))
- Correctly handle redactions of redactions. ([\#5788](https://github.com/matrix-org/synapse/issues/5788))
- Return 404 instead of 403 when accessing /rooms/{roomId}/event/{eventId} for an event without the appropriate permissions. ([\#5798](https://github.com/matrix-org/synapse/issues/5798))
- Fix check that tombstone is a state event in push rules. ([\#5804](https://github.com/matrix-org/synapse/issues/5804))
- Fix error when trying to login as a deactivated user when using a worker to handle login. ([\#5806](https://github.com/matrix-org/synapse/issues/5806))
- Fix bug where user `/sync` stream could get wedged in rare circumstances. ([\#5825](https://github.com/matrix-org/synapse/issues/5825))
- The purge_remote_media.sh script was fixed. ([\#5839](https://github.com/matrix-org/synapse/issues/5839))


Deprecations and Removals
-------------------------

- Synapse now no longer accepts the `-v`/`--verbose`, `-f`/`--log-file`, or `--log-config` command line flags, and removes the deprecated `verbose` and `log_file` configuration file options. Users of these options should migrate their options into the dedicated log configuration. ([\#5678](https://github.com/matrix-org/synapse/issues/5678), [\#5729](https://github.com/matrix-org/synapse/issues/5729))
- Remove non-functional 'expire_access_token' setting. ([\#5782](https://github.com/matrix-org/synapse/issues/5782))


Internal Changes
----------------

- Make Jaeger fully configurable. ([\#5694](https://github.com/matrix-org/synapse/issues/5694))
- Add precautionary measures to prevent future abuse of `window.opener` in default welcome page. ([\#5695](https://github.com/matrix-org/synapse/issues/5695))
- Reduce database IO usage by optimising queries for current membership. ([\#5706](https://github.com/matrix-org/synapse/issues/5706), [\#5738](https://github.com/matrix-org/synapse/issues/5738), [\#5746](https://github.com/matrix-org/synapse/issues/5746), [\#5752](https://github.com/matrix-org/synapse/issues/5752), [\#5770](https://github.com/matrix-org/synapse/issues/5770), [\#5774](https://github.com/matrix-org/synapse/issues/5774), [\#5792](https://github.com/matrix-org/synapse/issues/5792), [\#5793](https://github.com/matrix-org/synapse/issues/5793))
- Improve caching when fetching `get_filtered_current_state_ids`. ([\#5713](https://github.com/matrix-org/synapse/issues/5713))
- Don't accept opentracing data from clients. ([\#5715](https://github.com/matrix-org/synapse/issues/5715))
- Speed up PostgreSQL unit tests in CI. ([\#5717](https://github.com/matrix-org/synapse/issues/5717))
- Update the coding style document. ([\#5719](https://github.com/matrix-org/synapse/issues/5719))
- Improve database query performance when recording retry intervals for remote hosts. ([\#5720](https://github.com/matrix-org/synapse/issues/5720))
- Add a set of opentracing utils. ([\#5722](https://github.com/matrix-org/synapse/issues/5722))
- Cache result of get_version_string to reduce overhead of `/version` federation requests. ([\#5730](https://github.com/matrix-org/synapse/issues/5730))
- Return 'user_type' in admin API user endpoints results. ([\#5731](https://github.com/matrix-org/synapse/issues/5731))
- Don't package the sytest test blacklist file. ([\#5733](https://github.com/matrix-org/synapse/issues/5733))
- Replace uses of returnValue with plain return, as returnValue is not needed on Python 3. ([\#5736](https://github.com/matrix-org/synapse/issues/5736))
- Blacklist some flakey tests in worker mode. ([\#5740](https://github.com/matrix-org/synapse/issues/5740))
- Fix some error cases in the caching layer. ([\#5749](https://github.com/matrix-org/synapse/issues/5749))
- Add a prometheus metric for pending cache lookups. ([\#5750](https://github.com/matrix-org/synapse/issues/5750))
- Stop trying to fetch events with event_id=None. ([\#5753](https://github.com/matrix-org/synapse/issues/5753))
- Convert RedactionTestCase to modern test style. ([\#5768](https://github.com/matrix-org/synapse/issues/5768))
- Allow looping calls to be given arguments. ([\#5780](https://github.com/matrix-org/synapse/issues/5780))
- Set the logs emitted when checking typing and presence timeouts to DEBUG level, not INFO. ([\#5785](https://github.com/matrix-org/synapse/issues/5785))
- Remove DelayedCall debugging from the test suite, as it is no longer required in the vast majority of Synapse's tests. ([\#5787](https://github.com/matrix-org/synapse/issues/5787))
- Remove some spurious exceptions from the logs where we failed to talk to a remote server. ([\#5790](https://github.com/matrix-org/synapse/issues/5790))
- Improve performance when making `.well-known` requests by sharing the SSL options between requests. ([\#5794](https://github.com/matrix-org/synapse/issues/5794))
- Disable codecov GitHub comments on PRs. ([\#5796](https://github.com/matrix-org/synapse/issues/5796))
- Don't allow clients to send tombstone events that reference the room it's sent in. ([\#5801](https://github.com/matrix-org/synapse/issues/5801))
- Deny redactions of events sent in a different room. ([\#5802](https://github.com/matrix-org/synapse/issues/5802))
- Deny sending well known state types as non-state events. ([\#5805](https://github.com/matrix-org/synapse/issues/5805))
- Handle incorrectly encoded query params correctly by returning a 400. ([\#5808](https://github.com/matrix-org/synapse/issues/5808))
- Handle pusher being deleted during processing rather than logging an exception. ([\#5809](https://github.com/matrix-org/synapse/issues/5809))
- Return 502 not 500 when failing to reach any remote server. ([\#5810](https://github.com/matrix-org/synapse/issues/5810))
- Reduce global pauses in the events stream caused by expensive state resolution during persistence. ([\#5826](https://github.com/matrix-org/synapse/issues/5826))
- Add a lower bound to well-known lookup cache time to avoid repeated lookups. ([\#5836](https://github.com/matrix-org/synapse/issues/5836))
- Whitelist history visbility sytests in worker mode tests. ([\#5843](https://github.com/matrix-org/synapse/issues/5843))


Synapse 1.2.1 (2019-07-26)
==========================

Security update
---------------

This release includes *four* security fixes:

- Prevent an attack where a federated server could send redactions for arbitrary events in v1 and v2 rooms. ([\#5767](https://github.com/matrix-org/synapse/issues/5767))
- Prevent a denial-of-service attack where cycles of redaction events would make Synapse spin infinitely. Thanks to `@lrizika:matrix.org` for identifying and responsibly disclosing this issue. ([0f2ecb961](https://github.com/matrix-org/synapse/commit/0f2ecb961))
- Prevent an attack where users could be joined or parted from public rooms without their consent. Thanks to @dylangerdaly for identifying and responsibly disclosing this issue. ([\#5744](https://github.com/matrix-org/synapse/issues/5744))
- Fix a vulnerability where a federated server could spoof read-receipts from
  users on other servers. Thanks to @dylangerdaly for identifying this issue too. ([\#5743](https://github.com/matrix-org/synapse/issues/5743))

Additionally, the following fix was in Synapse **1.2.0**, but was not correctly
identified during the original release:

- It was possible for a room moderator to send a redaction for an `m.room.create` event, which would downgrade the room to version 1. Thanks to `/dev/ponies` for identifying and responsibly disclosing this issue! ([\#5701](https://github.com/matrix-org/synapse/issues/5701))

Synapse 1.2.0 (2019-07-25)
==========================

No significant changes.


Synapse 1.2.0rc2 (2019-07-24)
=============================

Bugfixes
--------

- Fix a regression introduced in v1.2.0rc1 which led to incorrect labels on some prometheus metrics. ([\#5734](https://github.com/matrix-org/synapse/issues/5734))


Synapse 1.2.0rc1 (2019-07-22)
=============================

Security fixes
--------------

This update included a security fix which was initially incorrectly flagged as
a regular bug fix.

- It was possible for a room moderator to send a redaction for an `m.room.create` event, which would downgrade the room to version 1. Thanks to `/dev/ponies` for identifying and responsibly disclosing this issue! ([\#5701](https://github.com/matrix-org/synapse/issues/5701))

Features
--------

- Add support for opentracing. ([\#5544](https://github.com/matrix-org/synapse/issues/5544), [\#5712](https://github.com/matrix-org/synapse/issues/5712))
- Add ability to pull all locally stored events out of synapse that a particular user can see. ([\#5589](https://github.com/matrix-org/synapse/issues/5589))
- Add a basic admin command app to allow server operators to run Synapse admin commands separately from the main production instance. ([\#5597](https://github.com/matrix-org/synapse/issues/5597))
- Add `sender` and `origin_server_ts` fields to `m.replace`. ([\#5613](https://github.com/matrix-org/synapse/issues/5613))
- Add default push rule to ignore reactions. ([\#5623](https://github.com/matrix-org/synapse/issues/5623))
- Include the original event when asking for its relations. ([\#5626](https://github.com/matrix-org/synapse/issues/5626))
- Implement `session_lifetime` configuration option, after which access tokens will expire. ([\#5660](https://github.com/matrix-org/synapse/issues/5660))
- Return "This account has been deactivated" when a deactivated user tries to login. ([\#5674](https://github.com/matrix-org/synapse/issues/5674))
- Enable aggregations support by default ([\#5714](https://github.com/matrix-org/synapse/issues/5714))


Bugfixes
--------

- Fix 'utime went backwards' errors on daemonization. ([\#5609](https://github.com/matrix-org/synapse/issues/5609))
- Various minor fixes to the federation request rate limiter. ([\#5621](https://github.com/matrix-org/synapse/issues/5621))
- Forbid viewing relations on an event once it has been redacted. ([\#5629](https://github.com/matrix-org/synapse/issues/5629))
- Fix requests to the `/store_invite` endpoint of identity servers being sent in the wrong format. ([\#5638](https://github.com/matrix-org/synapse/issues/5638))
- Fix newly-registered users not being able to lookup their own profile without joining a room. ([\#5644](https://github.com/matrix-org/synapse/issues/5644))
- Fix bug in #5626 that prevented the original_event field from actually having the contents of the original event in a call to `/relations`. ([\#5654](https://github.com/matrix-org/synapse/issues/5654))
- Fix 3PID bind requests being sent to identity servers as `application/x-form-www-urlencoded` data, which is deprecated. ([\#5658](https://github.com/matrix-org/synapse/issues/5658))
- Fix some problems with authenticating redactions in recent room versions. ([\#5699](https://github.com/matrix-org/synapse/issues/5699), [\#5700](https://github.com/matrix-org/synapse/issues/5700), [\#5707](https://github.com/matrix-org/synapse/issues/5707))


Updates to the Docker image
---------------------------

- Base Docker image on a newer Alpine Linux version (3.8 -> 3.10). ([\#5619](https://github.com/matrix-org/synapse/issues/5619))
- Add missing space in default logging file format generated by the Docker image. ([\#5620](https://github.com/matrix-org/synapse/issues/5620))


Improved Documentation
----------------------

- Add information about nginx normalisation to reverse_proxy.rst. Contributed by @skalarproduktraum - thanks! ([\#5397](https://github.com/matrix-org/synapse/issues/5397))
- --no-pep517 should be --no-use-pep517 in the documentation to setup the development environment. ([\#5651](https://github.com/matrix-org/synapse/issues/5651))
- Improvements to Postgres setup instructions. Contributed by @Lrizika - thanks! ([\#5661](https://github.com/matrix-org/synapse/issues/5661))
- Minor tweaks to postgres documentation. ([\#5675](https://github.com/matrix-org/synapse/issues/5675))


Deprecations and Removals
-------------------------

- Remove support for the `invite_3pid_guest` configuration setting. ([\#5625](https://github.com/matrix-org/synapse/issues/5625))


Internal Changes
----------------

- Move logging code out of `synapse.util` and into `synapse.logging`. ([\#5606](https://github.com/matrix-org/synapse/issues/5606), [\#5617](https://github.com/matrix-org/synapse/issues/5617))
- Add a blacklist file to the repo to blacklist certain sytests from failing CI. ([\#5611](https://github.com/matrix-org/synapse/issues/5611))
- Make runtime errors surrounding password reset emails much clearer. ([\#5616](https://github.com/matrix-org/synapse/issues/5616))
- Remove dead code for persiting outgoing federation transactions. ([\#5622](https://github.com/matrix-org/synapse/issues/5622))
- Add `lint.sh` to the scripts-dev folder which will run all linting steps required by CI. ([\#5627](https://github.com/matrix-org/synapse/issues/5627))
- Move RegistrationHandler.get_or_create_user to test code. ([\#5628](https://github.com/matrix-org/synapse/issues/5628))
- Add some more common python virtual-environment paths to the black exclusion list. ([\#5630](https://github.com/matrix-org/synapse/issues/5630))
- Some counter metrics exposed over Prometheus have been renamed, with the old names preserved for backwards compatibility and deprecated. See `docs/metrics-howto.rst` for details. ([\#5636](https://github.com/matrix-org/synapse/issues/5636))
- Unblacklist some user_directory sytests. ([\#5637](https://github.com/matrix-org/synapse/issues/5637))
- Factor out some redundant code in the login implementation. ([\#5639](https://github.com/matrix-org/synapse/issues/5639))
- Update ModuleApi to avoid register(generate_token=True). ([\#5640](https://github.com/matrix-org/synapse/issues/5640))
- Remove access-token support from `RegistrationHandler.register`, and rename it. ([\#5641](https://github.com/matrix-org/synapse/issues/5641))
- Remove access-token support from `RegistrationStore.register`, and rename it. ([\#5642](https://github.com/matrix-org/synapse/issues/5642))
- Improve logging for auto-join when a new user is created. ([\#5643](https://github.com/matrix-org/synapse/issues/5643))
- Remove unused and unnecessary check for FederationDeniedError in _exception_to_failure. ([\#5645](https://github.com/matrix-org/synapse/issues/5645))
- Fix a small typo in a code comment. ([\#5655](https://github.com/matrix-org/synapse/issues/5655))
- Clean up exception handling around client access tokens. ([\#5656](https://github.com/matrix-org/synapse/issues/5656))
- Add a mechanism for per-test homeserver configuration in the unit tests. ([\#5657](https://github.com/matrix-org/synapse/issues/5657))
- Inline issue_access_token. ([\#5659](https://github.com/matrix-org/synapse/issues/5659))
- Update the sytest BuildKite configuration to checkout Synapse in `/src`. ([\#5664](https://github.com/matrix-org/synapse/issues/5664))
- Add a `docker` type to the towncrier configuration. ([\#5673](https://github.com/matrix-org/synapse/issues/5673))
- Convert `synapse.federation.transport.server` to `async`. Might improve some stack traces. ([\#5689](https://github.com/matrix-org/synapse/issues/5689))
- Documentation for opentracing. ([\#5703](https://github.com/matrix-org/synapse/issues/5703))


Synapse 1.1.0 (2019-07-04)
==========================

As of v1.1.0, Synapse no longer supports Python 2, nor Postgres version 9.4.
See the [upgrade notes](UPGRADE.rst#upgrading-to-v110) for more details.

This release also deprecates the use of environment variables to configure the
docker image. See the [docker README](https://github.com/matrix-org/synapse/blob/release-v1.1.0/docker/README.md#legacy-dynamic-configuration-file-support)
for more details.

No changes since 1.1.0rc2.


Synapse 1.1.0rc2 (2019-07-03)
=============================

Bugfixes
--------

- Fix regression in 1.1rc1 where OPTIONS requests to the media repo would fail. ([\#5593](https://github.com/matrix-org/synapse/issues/5593))
- Removed the `SYNAPSE_SMTP_*` docker container environment variables. Using these environment variables prevented the docker container from starting in Synapse v1.0, even though they didn't actually allow any functionality anyway. ([\#5596](https://github.com/matrix-org/synapse/issues/5596))
- Fix a number of "Starting txn from sentinel context" warnings. ([\#5605](https://github.com/matrix-org/synapse/issues/5605))


Internal Changes
----------------

- Update github templates. ([\#5552](https://github.com/matrix-org/synapse/issues/5552))


Synapse 1.1.0rc1 (2019-07-02)
=============================

As of v1.1.0, Synapse no longer supports Python 2, nor Postgres version 9.4.
See the [upgrade notes](UPGRADE.rst#upgrading-to-v110) for more details.

Features
--------

- Added possibilty to disable local password authentication. Contributed by Daniel Hoffend. ([\#5092](https://github.com/matrix-org/synapse/issues/5092))
- Add monthly active users to phonehome stats. ([\#5252](https://github.com/matrix-org/synapse/issues/5252))
- Allow expired user to trigger renewal email sending manually. ([\#5363](https://github.com/matrix-org/synapse/issues/5363))
- Statistics on forward extremities per room are now exposed via Prometheus. ([\#5384](https://github.com/matrix-org/synapse/issues/5384), [\#5458](https://github.com/matrix-org/synapse/issues/5458), [\#5461](https://github.com/matrix-org/synapse/issues/5461))
- Add --no-daemonize option to run synapse in the foreground, per issue #4130. Contributed by Soham Gumaste. ([\#5412](https://github.com/matrix-org/synapse/issues/5412), [\#5587](https://github.com/matrix-org/synapse/issues/5587))
- Fully support SAML2 authentication. Contributed by [Alexander Trost](https://github.com/galexrt) - thank you! ([\#5422](https://github.com/matrix-org/synapse/issues/5422))
- Allow server admins to define implementations of extra rules for allowing or denying incoming events. ([\#5440](https://github.com/matrix-org/synapse/issues/5440), [\#5474](https://github.com/matrix-org/synapse/issues/5474), [\#5477](https://github.com/matrix-org/synapse/issues/5477))
- Add support for handling pagination APIs on client reader worker. ([\#5505](https://github.com/matrix-org/synapse/issues/5505), [\#5513](https://github.com/matrix-org/synapse/issues/5513), [\#5531](https://github.com/matrix-org/synapse/issues/5531))
- Improve help and cmdline option names for --generate-config options. ([\#5512](https://github.com/matrix-org/synapse/issues/5512))
- Allow configuration of the path used for ACME account keys. ([\#5516](https://github.com/matrix-org/synapse/issues/5516), [\#5521](https://github.com/matrix-org/synapse/issues/5521), [\#5522](https://github.com/matrix-org/synapse/issues/5522))
- Add --data-dir and --open-private-ports options. ([\#5524](https://github.com/matrix-org/synapse/issues/5524))
- Split public rooms directory auth config in two settings, in order to manage client auth independently from the federation part of it. Obsoletes the "restrict_public_rooms_to_local_users" configuration setting. If "restrict_public_rooms_to_local_users" is set in the config, Synapse will act as if both new options are enabled, i.e. require authentication through the client API and deny federation requests. ([\#5534](https://github.com/matrix-org/synapse/issues/5534))
- The minimum TLS version used for outgoing federation requests can now be set with `federation_client_minimum_tls_version`. ([\#5550](https://github.com/matrix-org/synapse/issues/5550))
- Optimise devices changed query to not pull unnecessary rows from the database, reducing database load. ([\#5559](https://github.com/matrix-org/synapse/issues/5559))
- Add new metrics for number of forward extremities being persisted and number of state groups involved in resolution. ([\#5476](https://github.com/matrix-org/synapse/issues/5476))

Bugfixes
--------

- Fix bug processing incoming events over federation if call to `/get_missing_events` fails. ([\#5042](https://github.com/matrix-org/synapse/issues/5042))
- Prevent more than one room upgrade happening simultaneously on the same room. ([\#5051](https://github.com/matrix-org/synapse/issues/5051))
- Fix a bug where running synapse_port_db would cause the account validity feature to fail because it didn't set the type of the email_sent column to boolean. ([\#5325](https://github.com/matrix-org/synapse/issues/5325))
- Warn about disabling email-based password resets when a reset occurs, and remove warning when someone attempts a phone-based reset. ([\#5387](https://github.com/matrix-org/synapse/issues/5387))
- Fix email notifications for unnamed rooms with multiple people. ([\#5388](https://github.com/matrix-org/synapse/issues/5388))
- Fix exceptions in federation reader worker caused by attempting to renew attestations, which should only happen on master worker. ([\#5389](https://github.com/matrix-org/synapse/issues/5389))
- Fix handling of failures fetching remote content to not log failures as exceptions. ([\#5390](https://github.com/matrix-org/synapse/issues/5390))
- Fix a bug where deactivated users could receive renewal emails if the account validity feature is on. ([\#5394](https://github.com/matrix-org/synapse/issues/5394))
- Fix missing invite state after exchanging 3PID invites over federaton. ([\#5464](https://github.com/matrix-org/synapse/issues/5464))
- Fix intermittent exceptions on Apple hardware. Also fix bug that caused database activity times to be under-reported in log lines. ([\#5498](https://github.com/matrix-org/synapse/issues/5498))
- Fix logging error when a tampered event is detected. ([\#5500](https://github.com/matrix-org/synapse/issues/5500))
- Fix bug where clients could tight loop calling `/sync` for a period. ([\#5507](https://github.com/matrix-org/synapse/issues/5507))
- Fix bug with `jinja2` preventing Synapse from starting. Users who had this problem should now simply need to run `pip install matrix-synapse`. ([\#5514](https://github.com/matrix-org/synapse/issues/5514))
- Fix a regression where homeservers on private IP addresses were incorrectly blacklisted. ([\#5523](https://github.com/matrix-org/synapse/issues/5523))
- Fixed m.login.jwt using unregistred user_id and added pyjwt>=1.6.4 as jwt conditional dependencies. Contributed by Pau Rodriguez-Estivill. ([\#5555](https://github.com/matrix-org/synapse/issues/5555), [\#5586](https://github.com/matrix-org/synapse/issues/5586))
- Fix a bug that would cause invited users to receive several emails for a single 3PID invite in case the inviter is rate limited. ([\#5576](https://github.com/matrix-org/synapse/issues/5576))


Updates to the Docker image
---------------------------
- Add ability to change Docker containers [timezone](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones) with the `TZ` variable. ([\#5383](https://github.com/matrix-org/synapse/issues/5383))
- Update docker image to use Python 3.7. ([\#5546](https://github.com/matrix-org/synapse/issues/5546))
- Deprecate the use of environment variables for configuration, and make the use of a static configuration the default. ([\#5561](https://github.com/matrix-org/synapse/issues/5561), [\#5562](https://github.com/matrix-org/synapse/issues/5562), [\#5566](https://github.com/matrix-org/synapse/issues/5566), [\#5567](https://github.com/matrix-org/synapse/issues/5567))
- Increase default log level for docker image to INFO. It can still be changed by editing the generated log.config file. ([\#5547](https://github.com/matrix-org/synapse/issues/5547))
- Send synapse logs to the docker logging system, by default. ([\#5565](https://github.com/matrix-org/synapse/issues/5565))
- Open the non-TLS port by default. ([\#5568](https://github.com/matrix-org/synapse/issues/5568))
- Fix failure to start under docker with SAML support enabled. ([\#5490](https://github.com/matrix-org/synapse/issues/5490))
- Use a sensible location for data files when generating a config file. ([\#5563](https://github.com/matrix-org/synapse/issues/5563))


Deprecations and Removals
-------------------------

- Python 2.7 is no longer a supported platform. Synapse now requires Python 3.5+ to run. ([\#5425](https://github.com/matrix-org/synapse/issues/5425))
- PostgreSQL 9.4 is no longer supported. Synapse requires Postgres 9.5+ or above for Postgres support. ([\#5448](https://github.com/matrix-org/synapse/issues/5448))
- Remove support for cpu_affinity setting. ([\#5525](https://github.com/matrix-org/synapse/issues/5525))


Improved Documentation
----------------------
- Improve README section on performance troubleshooting. ([\#4276](https://github.com/matrix-org/synapse/issues/4276))
- Add information about how to install and run `black` on the codebase to code_style.rst. ([\#5537](https://github.com/matrix-org/synapse/issues/5537))
- Improve install docs on choosing server_name. ([\#5558](https://github.com/matrix-org/synapse/issues/5558))


Internal Changes
----------------

- Add logging to 3pid invite signature verification. ([\#5015](https://github.com/matrix-org/synapse/issues/5015))
- Update example haproxy config to a more compatible setup. ([\#5313](https://github.com/matrix-org/synapse/issues/5313))
- Track deactivated accounts in the database. ([\#5378](https://github.com/matrix-org/synapse/issues/5378), [\#5465](https://github.com/matrix-org/synapse/issues/5465), [\#5493](https://github.com/matrix-org/synapse/issues/5493))
- Clean up code for sending federation EDUs. ([\#5381](https://github.com/matrix-org/synapse/issues/5381))
- Add a sponsor button to the repo. ([\#5382](https://github.com/matrix-org/synapse/issues/5382), [\#5386](https://github.com/matrix-org/synapse/issues/5386))
- Don't log non-200 responses from federation queries as exceptions. ([\#5383](https://github.com/matrix-org/synapse/issues/5383))
- Update Python syntax in contrib/ to Python 3. ([\#5446](https://github.com/matrix-org/synapse/issues/5446))
- Update federation_client dev script to support `.well-known` and work with python3. ([\#5447](https://github.com/matrix-org/synapse/issues/5447))
- SyTest has been moved to Buildkite. ([\#5459](https://github.com/matrix-org/synapse/issues/5459))
- Demo script now uses python3. ([\#5460](https://github.com/matrix-org/synapse/issues/5460))
- Synapse can now handle RestServlets that return coroutines. ([\#5475](https://github.com/matrix-org/synapse/issues/5475), [\#5585](https://github.com/matrix-org/synapse/issues/5585))
- The demo servers talk to each other again. ([\#5478](https://github.com/matrix-org/synapse/issues/5478))
- Add an EXPERIMENTAL config option to try and periodically clean up extremities by sending dummy events. ([\#5480](https://github.com/matrix-org/synapse/issues/5480))
- Synapse's codebase is now formatted by `black`. ([\#5482](https://github.com/matrix-org/synapse/issues/5482))
- Some cleanups and sanity-checking in the CPU and database metrics. ([\#5499](https://github.com/matrix-org/synapse/issues/5499))
- Improve email notification logging. ([\#5502](https://github.com/matrix-org/synapse/issues/5502))
- Fix "Unexpected entry in 'full_schemas'" log warning. ([\#5509](https://github.com/matrix-org/synapse/issues/5509))
- Improve logging when generating config files. ([\#5510](https://github.com/matrix-org/synapse/issues/5510))
- Refactor and clean up Config parser for maintainability. ([\#5511](https://github.com/matrix-org/synapse/issues/5511))
- Make the config clearer in that email.template_dir is relative to the Synapse's root directory, not the `synapse/` folder within it. ([\#5543](https://github.com/matrix-org/synapse/issues/5543))
- Update v1.0.0 release changelog to include more information about changes to password resets. ([\#5545](https://github.com/matrix-org/synapse/issues/5545))
- Remove non-functioning check_event_hash.py dev script. ([\#5548](https://github.com/matrix-org/synapse/issues/5548))
- Synapse will now only allow TLS v1.2 connections when serving federation, if it terminates TLS. As Synapse's allowed ciphers were only able to be used in TLSv1.2 before, this does not change behaviour. ([\#5550](https://github.com/matrix-org/synapse/issues/5550))
- Logging when running GC collection on generation 0 is now at the DEBUG level, not INFO. ([\#5557](https://github.com/matrix-org/synapse/issues/5557))
- Reduce the amount of stuff we send in the docker context. ([\#5564](https://github.com/matrix-org/synapse/issues/5564))
- Point the reverse links in the Purge History contrib scripts at the intended location. ([\#5570](https://github.com/matrix-org/synapse/issues/5570))


Synapse 1.0.0 (2019-06-11)
==========================

Bugfixes
--------

- Fix bug where attempting to send transactions with large number of EDUs can fail. ([\#5418](https://github.com/matrix-org/synapse/issues/5418))


Improved Documentation
----------------------

- Expand the federation guide to include relevant content from the MSC1711 FAQ ([\#5419](https://github.com/matrix-org/synapse/issues/5419))


Internal Changes
----------------

- Move password reset links to /_matrix/client/unstable namespace. ([\#5424](https://github.com/matrix-org/synapse/issues/5424))


Synapse 1.0.0rc3 (2019-06-10)
=============================

Security: Fix authentication bug introduced in 1.0.0rc1. Please upgrade to rc3 immediately


Synapse 1.0.0rc2 (2019-06-10)
=============================

Bugfixes
--------

- Remove redundant warning about key server response validation. ([\#5392](https://github.com/matrix-org/synapse/issues/5392))
- Fix bug where old keys stored in the database with a null valid until timestamp caused all verification requests for that key to fail. ([\#5415](https://github.com/matrix-org/synapse/issues/5415))
- Fix excessive memory using with default `federation_verify_certificates: true` configuration. ([\#5417](https://github.com/matrix-org/synapse/issues/5417))


Synapse 1.0.0rc1 (2019-06-07)
=============================

Features
--------

- Synapse now more efficiently collates room statistics. ([\#4338](https://github.com/matrix-org/synapse/issues/4338), [\#5260](https://github.com/matrix-org/synapse/issues/5260), [\#5324](https://github.com/matrix-org/synapse/issues/5324))
- Add experimental support for relations (aka reactions and edits). ([\#5220](https://github.com/matrix-org/synapse/issues/5220))
- Ability to configure default room version. ([\#5223](https://github.com/matrix-org/synapse/issues/5223), [\#5249](https://github.com/matrix-org/synapse/issues/5249))
- Allow configuring a range for the account validity startup job. ([\#5276](https://github.com/matrix-org/synapse/issues/5276))
- CAS login will now hit the r0 API, not the deprecated v1 one. ([\#5286](https://github.com/matrix-org/synapse/issues/5286))
- Validate federation server TLS certificates by default (implements [MSC1711](https://github.com/matrix-org/matrix-doc/blob/master/proposals/1711-x509-for-federation.md)). ([\#5359](https://github.com/matrix-org/synapse/issues/5359))
- Update /_matrix/client/versions to reference support for r0.5.0. ([\#5360](https://github.com/matrix-org/synapse/issues/5360))
- Add a script to generate new signing-key files. ([\#5361](https://github.com/matrix-org/synapse/issues/5361))
- Update upgrade and installation guides ahead of 1.0. ([\#5371](https://github.com/matrix-org/synapse/issues/5371))
- Replace the `perspectives` configuration section with `trusted_key_servers`, and make validating the signatures on responses optional (since TLS will do this job for us). ([\#5374](https://github.com/matrix-org/synapse/issues/5374))
- Add ability to perform password reset via email without trusting the identity server. **As a result of this PR, password resets will now be disabled on the default configuration.**

  Password reset emails are now sent from the homeserver by default, instead of the identity server. To enable this functionality, ensure `email` and `public_baseurl` config options are filled out.

  If you would like to re-enable password resets being sent from the identity server (warning: this is dangerous! See [#5345](https://github.com/matrix-org/synapse/pull/5345)), set `email.trust_identity_server_for_password_resets` to true. ([\#5377](https://github.com/matrix-org/synapse/issues/5377))
- Set default room version to v4. ([\#5379](https://github.com/matrix-org/synapse/issues/5379))


Bugfixes
--------

- Fixes client-server API not sending "m.heroes" to lazy-load /sync requests when a rooms name or its canonical alias are empty. Thanks to @dnaf for this work! ([\#5089](https://github.com/matrix-org/synapse/issues/5089))
- Prevent federation device list updates breaking when processing multiple updates at once. ([\#5156](https://github.com/matrix-org/synapse/issues/5156))
- Fix worker registration bug caused by ClientReaderSlavedStore being unable to see get_profileinfo. ([\#5200](https://github.com/matrix-org/synapse/issues/5200))
- Fix race when backfilling in rooms with worker mode. ([\#5221](https://github.com/matrix-org/synapse/issues/5221))
- Fix appservice timestamp massaging. ([\#5233](https://github.com/matrix-org/synapse/issues/5233))
- Ensure that server_keys fetched via a notary server are correctly signed. ([\#5251](https://github.com/matrix-org/synapse/issues/5251))
- Show the correct error when logging out and access token is missing. ([\#5256](https://github.com/matrix-org/synapse/issues/5256))
- Fix error code when there is an invalid parameter on /_matrix/client/r0/publicRooms ([\#5257](https://github.com/matrix-org/synapse/issues/5257))
- Fix error when downloading thumbnail with missing width/height parameter. ([\#5258](https://github.com/matrix-org/synapse/issues/5258))
- Fix schema update for account validity. ([\#5268](https://github.com/matrix-org/synapse/issues/5268))
- Fix bug where we leaked extremities when we soft failed events, leading to performance degradation. ([\#5274](https://github.com/matrix-org/synapse/issues/5274), [\#5278](https://github.com/matrix-org/synapse/issues/5278), [\#5291](https://github.com/matrix-org/synapse/issues/5291))
- Fix "db txn 'update_presence' from sentinel context" log messages. ([\#5275](https://github.com/matrix-org/synapse/issues/5275))
- Fix dropped logcontexts during high outbound traffic. ([\#5277](https://github.com/matrix-org/synapse/issues/5277))
- Fix a bug where it is not possible to get events in the federation format with the request `GET /_matrix/client/r0/rooms/{roomId}/messages`. ([\#5293](https://github.com/matrix-org/synapse/issues/5293))
- Fix performance problems with the rooms stats background update. ([\#5294](https://github.com/matrix-org/synapse/issues/5294))
- Fix noisy 'no key for server' logs. ([\#5300](https://github.com/matrix-org/synapse/issues/5300))
- Fix bug where a notary server would sometimes forget old keys. ([\#5307](https://github.com/matrix-org/synapse/issues/5307))
- Prevent users from setting huge displaynames and avatar URLs. ([\#5309](https://github.com/matrix-org/synapse/issues/5309))
- Fix handling of failures when processing incoming events where calling `/event_auth` on remote server fails. ([\#5317](https://github.com/matrix-org/synapse/issues/5317))
- Ensure that we have an up-to-date copy of the signing key when validating incoming federation requests. ([\#5321](https://github.com/matrix-org/synapse/issues/5321))
- Fix various problems which made the signing-key notary server time out for some requests. ([\#5333](https://github.com/matrix-org/synapse/issues/5333))
- Fix bug which would make certain operations (such as room joins) block for 20 minutes while attemoting to fetch verification keys. ([\#5334](https://github.com/matrix-org/synapse/issues/5334))
- Fix a bug where we could rapidly mark a server as unreachable even though it was only down for a few minutes. ([\#5335](https://github.com/matrix-org/synapse/issues/5335), [\#5340](https://github.com/matrix-org/synapse/issues/5340))
- Fix a bug where account validity renewal emails could only be sent when email notifs were enabled. ([\#5341](https://github.com/matrix-org/synapse/issues/5341))
- Fix failure when fetching batches of events during backfill, etc. ([\#5342](https://github.com/matrix-org/synapse/issues/5342))
- Add a new room version where the timestamps on events are checked against the validity periods on signing keys. ([\#5348](https://github.com/matrix-org/synapse/issues/5348), [\#5354](https://github.com/matrix-org/synapse/issues/5354))
- Fix room stats and presence background updates to correctly handle missing events. ([\#5352](https://github.com/matrix-org/synapse/issues/5352))
- Include left members in room summaries' heroes. ([\#5355](https://github.com/matrix-org/synapse/issues/5355))
- Fix `federation_custom_ca_list` configuration option. ([\#5362](https://github.com/matrix-org/synapse/issues/5362))
- Fix missing logcontext warnings on shutdown. ([\#5369](https://github.com/matrix-org/synapse/issues/5369))


Improved Documentation
----------------------

- Fix docs on resetting the user directory. ([\#5282](https://github.com/matrix-org/synapse/issues/5282))
- Fix notes about ACME in the MSC1711 faq. ([\#5357](https://github.com/matrix-org/synapse/issues/5357))


Internal Changes
----------------

- Synapse will now serve the experimental "room complexity" API endpoint. ([\#5216](https://github.com/matrix-org/synapse/issues/5216))
- The base classes for the v1 and v2_alpha REST APIs have been unified. ([\#5226](https://github.com/matrix-org/synapse/issues/5226), [\#5328](https://github.com/matrix-org/synapse/issues/5328))
- Simplifications and comments in do_auth. ([\#5227](https://github.com/matrix-org/synapse/issues/5227))
- Remove urllib3 pin as requests 2.22.0 has been released supporting urllib3 1.25.2. ([\#5230](https://github.com/matrix-org/synapse/issues/5230))
- Preparatory work for key-validity features. ([\#5232](https://github.com/matrix-org/synapse/issues/5232), [\#5234](https://github.com/matrix-org/synapse/issues/5234), [\#5235](https://github.com/matrix-org/synapse/issues/5235), [\#5236](https://github.com/matrix-org/synapse/issues/5236), [\#5237](https://github.com/matrix-org/synapse/issues/5237), [\#5244](https://github.com/matrix-org/synapse/issues/5244), [\#5250](https://github.com/matrix-org/synapse/issues/5250), [\#5296](https://github.com/matrix-org/synapse/issues/5296), [\#5299](https://github.com/matrix-org/synapse/issues/5299), [\#5343](https://github.com/matrix-org/synapse/issues/5343), [\#5347](https://github.com/matrix-org/synapse/issues/5347), [\#5356](https://github.com/matrix-org/synapse/issues/5356))
- Specify the type of reCAPTCHA key to use. ([\#5283](https://github.com/matrix-org/synapse/issues/5283))
- Improve sample config for monthly active user blocking. ([\#5284](https://github.com/matrix-org/synapse/issues/5284))
- Remove spurious debug from MatrixFederationHttpClient.get_json. ([\#5287](https://github.com/matrix-org/synapse/issues/5287))
- Improve logging for logcontext leaks. ([\#5288](https://github.com/matrix-org/synapse/issues/5288))
- Clarify that the admin change password API logs the user out. ([\#5303](https://github.com/matrix-org/synapse/issues/5303))
- New installs will now use the v54 full schema, rather than the full schema v14 and applying incremental updates to v54. ([\#5320](https://github.com/matrix-org/synapse/issues/5320))
- Improve docstrings on MatrixFederationClient. ([\#5332](https://github.com/matrix-org/synapse/issues/5332))
- Clean up FederationClient.get_events for clarity. ([\#5344](https://github.com/matrix-org/synapse/issues/5344))
- Various improvements to debug logging. ([\#5353](https://github.com/matrix-org/synapse/issues/5353))
- Don't run CI build checks until sample config check has passed. ([\#5370](https://github.com/matrix-org/synapse/issues/5370))
- Automatically retry buildkite builds (max twice) when an agent is lost. ([\#5380](https://github.com/matrix-org/synapse/issues/5380))


Synapse 0.99.5.2 (2019-05-30)
=============================

Bugfixes
--------

- Fix bug where we leaked extremities when we soft failed events, leading to performance degradation. ([\#5274](https://github.com/matrix-org/synapse/issues/5274), [\#5278](https://github.com/matrix-org/synapse/issues/5278), [\#5291](https://github.com/matrix-org/synapse/issues/5291))


Synapse 0.99.5.1 (2019-05-22)
=============================

0.99.5.1 supersedes 0.99.5 due to malformed debian changelog - no functional changes.

Synapse 0.99.5 (2019-05-22)
===========================

No significant changes.


Synapse 0.99.5rc1 (2019-05-21)
==============================

Features
--------

- Add ability to blacklist IP ranges for the federation client. ([\#5043](https://github.com/matrix-org/synapse/issues/5043))
- Ratelimiting configuration for clients sending messages and the federation server has been altered to match login ratelimiting. The old configuration names will continue working. Check the sample config for details of the new names. ([\#5181](https://github.com/matrix-org/synapse/issues/5181))
- Drop support for the undocumented /_matrix/client/v2_alpha API prefix. ([\#5190](https://github.com/matrix-org/synapse/issues/5190))
- Add an option to disable per-room profiles. ([\#5196](https://github.com/matrix-org/synapse/issues/5196))
- Stick an expiration date to any registered user missing one at startup if account validity is enabled. ([\#5204](https://github.com/matrix-org/synapse/issues/5204))
- Add experimental support for relations (aka reactions and edits). ([\#5209](https://github.com/matrix-org/synapse/issues/5209), [\#5211](https://github.com/matrix-org/synapse/issues/5211), [\#5203](https://github.com/matrix-org/synapse/issues/5203), [\#5212](https://github.com/matrix-org/synapse/issues/5212))
- Add a room version 4 which uses a new event ID format, as per [MSC2002](https://github.com/matrix-org/matrix-doc/pull/2002). ([\#5210](https://github.com/matrix-org/synapse/issues/5210), [\#5217](https://github.com/matrix-org/synapse/issues/5217))


Bugfixes
--------

- Fix image orientation when generating thumbnails (needs pillow>=4.3.0). Contributed by Pau Rodriguez-Estivill. ([\#5039](https://github.com/matrix-org/synapse/issues/5039))
- Exclude soft-failed events from forward-extremity candidates: fixes "No forward extremities left!" error. ([\#5146](https://github.com/matrix-org/synapse/issues/5146))
- Re-order stages in registration flows such that msisdn and email verification are done last. ([\#5174](https://github.com/matrix-org/synapse/issues/5174))
- Fix 3pid guest invites. ([\#5177](https://github.com/matrix-org/synapse/issues/5177))
- Fix a bug where the register endpoint would fail with M_THREEPID_IN_USE instead of returning an account previously registered in the same session. ([\#5187](https://github.com/matrix-org/synapse/issues/5187))
- Prevent registration for user ids that are too long to fit into a state key. Contributed by Reid Anderson. ([\#5198](https://github.com/matrix-org/synapse/issues/5198))
- Fix incompatibility between ACME support and Python 3.5.2. ([\#5218](https://github.com/matrix-org/synapse/issues/5218))
- Fix error handling for rooms whose versions are unknown. ([\#5219](https://github.com/matrix-org/synapse/issues/5219))


Internal Changes
----------------

- Make /sync attempt to return device updates for both joined and invited users. Note that this doesn't currently work correctly due to other bugs. ([\#3484](https://github.com/matrix-org/synapse/issues/3484))
- Update tests to consistently be configured via the same code that is used when loading from configuration files. ([\#5171](https://github.com/matrix-org/synapse/issues/5171), [\#5185](https://github.com/matrix-org/synapse/issues/5185))
- Allow client event serialization to be async. ([\#5183](https://github.com/matrix-org/synapse/issues/5183))
- Expose DataStore._get_events as get_events_as_list. ([\#5184](https://github.com/matrix-org/synapse/issues/5184))
- Make generating SQL bounds for pagination generic. ([\#5191](https://github.com/matrix-org/synapse/issues/5191))
- Stop telling people to install the optional dependencies by default. ([\#5197](https://github.com/matrix-org/synapse/issues/5197))


Synapse 0.99.4 (2019-05-15)
===========================

No significant changes.


Synapse 0.99.4rc1 (2019-05-13)
==============================

Features
--------

- Add systemd-python to the optional dependencies to enable logging to the systemd journal. Install with `pip install matrix-synapse[systemd]`. ([\#4339](https://github.com/matrix-org/synapse/issues/4339))
- Add a default .m.rule.tombstone push rule. ([\#4867](https://github.com/matrix-org/synapse/issues/4867))
- Add ability for password provider modules to bind email addresses to users upon registration. ([\#4947](https://github.com/matrix-org/synapse/issues/4947))
- Implementation of [MSC1711](https://github.com/matrix-org/matrix-doc/pull/1711) including config options for requiring valid TLS certificates for federation traffic, the ability to disable TLS validation for specific domains, and the ability to specify your own list of CA certificates. ([\#4967](https://github.com/matrix-org/synapse/issues/4967))
- Remove presence list support as per MSC 1819. ([\#4989](https://github.com/matrix-org/synapse/issues/4989))
- Reduce CPU usage starting pushers during start up. ([\#4991](https://github.com/matrix-org/synapse/issues/4991))
- Add a delete group admin API. ([\#5002](https://github.com/matrix-org/synapse/issues/5002))
- Add config option to block users from looking up 3PIDs. ([\#5010](https://github.com/matrix-org/synapse/issues/5010))
- Add context to phonehome stats. ([\#5020](https://github.com/matrix-org/synapse/issues/5020))
- Configure the example systemd units to have a log identifier of `matrix-synapse`
  instead of the executable name, `python`.
  Contributed by Christoph Müller. ([\#5023](https://github.com/matrix-org/synapse/issues/5023))
- Add time-based account expiration. ([\#5027](https://github.com/matrix-org/synapse/issues/5027), [\#5047](https://github.com/matrix-org/synapse/issues/5047), [\#5073](https://github.com/matrix-org/synapse/issues/5073), [\#5116](https://github.com/matrix-org/synapse/issues/5116))
- Add support for handling `/versions`, `/voip` and `/push_rules` client endpoints to client_reader worker. ([\#5063](https://github.com/matrix-org/synapse/issues/5063), [\#5065](https://github.com/matrix-org/synapse/issues/5065), [\#5070](https://github.com/matrix-org/synapse/issues/5070))
- Add a configuration option to require authentication on /publicRooms and /profile endpoints. ([\#5083](https://github.com/matrix-org/synapse/issues/5083))
- Move admin APIs to `/_synapse/admin/v1`. (The old paths are retained for backwards-compatibility, for now). ([\#5119](https://github.com/matrix-org/synapse/issues/5119))
- Implement an admin API for sending server notices. Many thanks to @krombel who provided a foundation for this work. ([\#5121](https://github.com/matrix-org/synapse/issues/5121), [\#5142](https://github.com/matrix-org/synapse/issues/5142))


Bugfixes
--------

- Avoid redundant URL encoding of redirect URL for SSO login in the fallback login page. Fixes a regression introduced in [#4220](https://github.com/matrix-org/synapse/pull/4220). Contributed by Marcel Fabian Krüger ("[zaugin](https://github.com/zauguin)"). ([\#4555](https://github.com/matrix-org/synapse/issues/4555))
- Fix bug where presence updates were sent to all servers in a room when a new server joined, rather than to just the new server. ([\#4942](https://github.com/matrix-org/synapse/issues/4942), [\#5103](https://github.com/matrix-org/synapse/issues/5103))
- Fix sync bug which made accepting invites unreliable in worker-mode synapses. ([\#4955](https://github.com/matrix-org/synapse/issues/4955), [\#4956](https://github.com/matrix-org/synapse/issues/4956))
- start.sh: Fix the --no-rate-limit option for messages and make it bypass rate limit on registration and login too. ([\#4981](https://github.com/matrix-org/synapse/issues/4981))
- Transfer related groups on room upgrade. ([\#4990](https://github.com/matrix-org/synapse/issues/4990))
- Prevent the ability to kick users from a room they aren't in. ([\#4999](https://github.com/matrix-org/synapse/issues/4999))
- Fix issue #4596 so synapse_port_db script works with --curses option on Python 3. Contributed by Anders Jensen-Waud <anders@jensenwaud.com>. ([\#5003](https://github.com/matrix-org/synapse/issues/5003))
- Clients timing out/disappearing while downloading from the media repository will now no longer log a spurious "Producer was not unregistered" message. ([\#5009](https://github.com/matrix-org/synapse/issues/5009))
- Fix "cannot import name execute_batch" error with postgres. ([\#5032](https://github.com/matrix-org/synapse/issues/5032))
- Fix disappearing exceptions in manhole. ([\#5035](https://github.com/matrix-org/synapse/issues/5035))
- Workaround bug in twisted where attempting too many concurrent DNS requests could cause it to hang due to running out of file descriptors. ([\#5037](https://github.com/matrix-org/synapse/issues/5037))
- Make sure we're not registering the same 3pid twice on registration. ([\#5071](https://github.com/matrix-org/synapse/issues/5071))
- Don't crash on lack of expiry templates. ([\#5077](https://github.com/matrix-org/synapse/issues/5077))
- Fix the ratelimiting on third party invites. ([\#5104](https://github.com/matrix-org/synapse/issues/5104))
- Add some missing limitations to room alias creation. ([\#5124](https://github.com/matrix-org/synapse/issues/5124), [\#5128](https://github.com/matrix-org/synapse/issues/5128))
- Limit the number of EDUs in transactions to 100 as expected by synapse. Thanks to @superboum for this work! ([\#5138](https://github.com/matrix-org/synapse/issues/5138))

Internal Changes
----------------

- Add test to verify threepid auth check added in #4435. ([\#4474](https://github.com/matrix-org/synapse/issues/4474))
- Fix/improve some docstrings in the replication code. ([\#4949](https://github.com/matrix-org/synapse/issues/4949))
- Split synapse.replication.tcp.streams into smaller files. ([\#4953](https://github.com/matrix-org/synapse/issues/4953))
- Refactor replication row generation/parsing. ([\#4954](https://github.com/matrix-org/synapse/issues/4954))
- Run `black` to clean up formatting on `synapse/storage/roommember.py` and `synapse/storage/events.py`. ([\#4959](https://github.com/matrix-org/synapse/issues/4959))
- Remove log line for password via the admin API. ([\#4965](https://github.com/matrix-org/synapse/issues/4965))
- Fix typo in TLS filenames in docker/README.md. Also add the '-p' commandline option to the 'docker run' example. Contributed by Jurrie Overgoor. ([\#4968](https://github.com/matrix-org/synapse/issues/4968))
- Refactor room version definitions. ([\#4969](https://github.com/matrix-org/synapse/issues/4969))
- Reduce log level of .well-known/matrix/client responses. ([\#4972](https://github.com/matrix-org/synapse/issues/4972))
- Add `config.signing_key_path` that can be read by `synapse.config` utility. ([\#4974](https://github.com/matrix-org/synapse/issues/4974))
- Track which identity server is used when binding a threepid and use that for unbinding, as per MSC1915. ([\#4982](https://github.com/matrix-org/synapse/issues/4982))
- Rewrite KeyringTestCase as a HomeserverTestCase. ([\#4985](https://github.com/matrix-org/synapse/issues/4985))
- README updates: Corrected the default POSTGRES_USER. Added port forwarding hint in TLS section. ([\#4987](https://github.com/matrix-org/synapse/issues/4987))
- Remove a number of unused tables from the database schema. ([\#4992](https://github.com/matrix-org/synapse/issues/4992), [\#5028](https://github.com/matrix-org/synapse/issues/5028), [\#5033](https://github.com/matrix-org/synapse/issues/5033))
- Run `black` on the remainder of `synapse/storage/`. ([\#4996](https://github.com/matrix-org/synapse/issues/4996))
- Fix grammar in get_current_users_in_room and give it a docstring. ([\#4998](https://github.com/matrix-org/synapse/issues/4998))
- Clean up some code in the server-key Keyring. ([\#5001](https://github.com/matrix-org/synapse/issues/5001))
- Convert SYNAPSE_NO_TLS Docker variable to boolean for user friendliness. Contributed by Gabriel Eckerson. ([\#5005](https://github.com/matrix-org/synapse/issues/5005))
- Refactor synapse.storage._base._simple_select_list_paginate. ([\#5007](https://github.com/matrix-org/synapse/issues/5007))
- Store the notary server name correctly in server_keys_json. ([\#5024](https://github.com/matrix-org/synapse/issues/5024))
- Rewrite Datastore.get_server_verify_keys to reduce the number of database transactions. ([\#5030](https://github.com/matrix-org/synapse/issues/5030))
- Remove extraneous period from copyright headers. ([\#5046](https://github.com/matrix-org/synapse/issues/5046))
- Update documentation for where to get Synapse packages. ([\#5067](https://github.com/matrix-org/synapse/issues/5067))
- Add workarounds for pep-517 install errors. ([\#5098](https://github.com/matrix-org/synapse/issues/5098))
- Improve logging when event-signature checks fail. ([\#5100](https://github.com/matrix-org/synapse/issues/5100))
- Factor out an "assert_requester_is_admin" function. ([\#5120](https://github.com/matrix-org/synapse/issues/5120))
- Remove the requirement to authenticate for /admin/server_version. ([\#5122](https://github.com/matrix-org/synapse/issues/5122))
- Prevent an exception from being raised in a IResolutionReceiver and use a more generic error message for blacklisted URL previews. ([\#5155](https://github.com/matrix-org/synapse/issues/5155))
- Run `black` on the tests directory. ([\#5170](https://github.com/matrix-org/synapse/issues/5170))
- Fix CI after new release of isort. ([\#5179](https://github.com/matrix-org/synapse/issues/5179))
- Fix bogus imports in unit tests. ([\#5154](https://github.com/matrix-org/synapse/issues/5154))


Synapse 0.99.3.2 (2019-05-03)
=============================

Internal Changes
----------------

- Ensure that we have `urllib3` <1.25, to resolve incompatibility with `requests`. ([\#5135](https://github.com/matrix-org/synapse/issues/5135))


Synapse 0.99.3.1 (2019-05-03)
=============================

Security update
---------------

This release includes two security fixes:

- Switch to using a cryptographically-secure random number generator for token strings, ensuring they cannot be predicted by an attacker. Thanks to @opnsec for identifying and responsibly disclosing this issue! ([\#5133](https://github.com/matrix-org/synapse/issues/5133))
- Blacklist 0.0.0.0 and :: by default for URL previews. Thanks to @opnsec for identifying and responsibly disclosing this issue too! ([\#5134](https://github.com/matrix-org/synapse/issues/5134))

Synapse 0.99.3 (2019-04-01)
===========================

No significant changes.


Synapse 0.99.3rc1 (2019-03-27)
==============================

Features
--------

- The user directory has been rewritten to make it faster, with less chance of falling behind on a large server. ([\#4537](https://github.com/matrix-org/synapse/issues/4537), [\#4846](https://github.com/matrix-org/synapse/issues/4846), [\#4864](https://github.com/matrix-org/synapse/issues/4864), [\#4887](https://github.com/matrix-org/synapse/issues/4887), [\#4900](https://github.com/matrix-org/synapse/issues/4900), [\#4944](https://github.com/matrix-org/synapse/issues/4944))
- Add configurable rate limiting to the /register endpoint. ([\#4735](https://github.com/matrix-org/synapse/issues/4735), [\#4804](https://github.com/matrix-org/synapse/issues/4804))
- Move server key queries to federation reader. ([\#4757](https://github.com/matrix-org/synapse/issues/4757))
- Add support for /account/3pid REST endpoint to client_reader worker. ([\#4759](https://github.com/matrix-org/synapse/issues/4759))
- Add an endpoint to the admin API for querying the server version. Contributed by Joseph Weston. ([\#4772](https://github.com/matrix-org/synapse/issues/4772))
- Include a default configuration file in the 'docs' directory. ([\#4791](https://github.com/matrix-org/synapse/issues/4791), [\#4801](https://github.com/matrix-org/synapse/issues/4801))
- Synapse is now permissive about trailing slashes on some of its federation endpoints, allowing zero or more to be present. ([\#4793](https://github.com/matrix-org/synapse/issues/4793))
- Add support for /keys/query and /keys/changes REST endpoints to client_reader worker. ([\#4796](https://github.com/matrix-org/synapse/issues/4796))
- Add checks to incoming events over federation for events evading auth (aka "soft fail"). ([\#4814](https://github.com/matrix-org/synapse/issues/4814))
- Add configurable rate limiting to the /login endpoint. ([\#4821](https://github.com/matrix-org/synapse/issues/4821), [\#4865](https://github.com/matrix-org/synapse/issues/4865))
- Remove trailing slashes from certain outbound federation requests. Retry if receiving a 404. Context: #3622. ([\#4840](https://github.com/matrix-org/synapse/issues/4840))
- Allow passing --daemonize flags to workers in the same way as with master. ([\#4853](https://github.com/matrix-org/synapse/issues/4853))
- Batch up outgoing read-receipts to reduce federation traffic. ([\#4890](https://github.com/matrix-org/synapse/issues/4890), [\#4927](https://github.com/matrix-org/synapse/issues/4927))
- Add option to disable searching the user directory. ([\#4895](https://github.com/matrix-org/synapse/issues/4895))
- Add option to disable searching of local and remote public room lists. ([\#4896](https://github.com/matrix-org/synapse/issues/4896))
- Add ability for password providers to login/register a user via 3PID (email, phone). ([\#4931](https://github.com/matrix-org/synapse/issues/4931))


Bugfixes
--------

- Fix a bug where media with spaces in the name would get a corrupted name. ([\#2090](https://github.com/matrix-org/synapse/issues/2090))
- Fix attempting to paginate in rooms where server cannot see any events, to avoid unnecessarily pulling in lots of redacted events. ([\#4699](https://github.com/matrix-org/synapse/issues/4699))
- 'event_id' is now a required parameter in federated state requests, as per the matrix spec. ([\#4740](https://github.com/matrix-org/synapse/issues/4740))
- Fix tightloop over connecting to replication server. ([\#4749](https://github.com/matrix-org/synapse/issues/4749))
- Fix parsing of Content-Disposition headers on remote media requests and URL previews. ([\#4763](https://github.com/matrix-org/synapse/issues/4763))
- Fix incorrect log about not persisting duplicate state event. ([\#4776](https://github.com/matrix-org/synapse/issues/4776))
- Fix v4v6 option in HAProxy example config. Contributed by Flakebi. ([\#4790](https://github.com/matrix-org/synapse/issues/4790))
- Handle batch updates in worker replication protocol. ([\#4792](https://github.com/matrix-org/synapse/issues/4792))
- Fix bug where we didn't correctly throttle sending of USER_IP commands over replication. ([\#4818](https://github.com/matrix-org/synapse/issues/4818))
- Fix potential race in handling missing updates in device list updates. ([\#4829](https://github.com/matrix-org/synapse/issues/4829))
- Fix bug where synapse expected an un-specced `prev_state` field on state events. ([\#4837](https://github.com/matrix-org/synapse/issues/4837))
- Transfer a user's notification settings (push rules) on room upgrade. ([\#4838](https://github.com/matrix-org/synapse/issues/4838))
- fix test_auto_create_auto_join_where_no_consent. ([\#4886](https://github.com/matrix-org/synapse/issues/4886))
- Fix a bug where hs_disabled_message was sometimes not correctly enforced. ([\#4888](https://github.com/matrix-org/synapse/issues/4888))
- Fix bug in shutdown room admin API where it would fail if a user in the room hadn't consented to the privacy policy. ([\#4904](https://github.com/matrix-org/synapse/issues/4904))
- Fix bug where blocked world-readable rooms were still peekable. ([\#4908](https://github.com/matrix-org/synapse/issues/4908))


Internal Changes
----------------

- Add a systemd setup that supports synapse workers. Contributed by Luca Corbatto. ([\#4662](https://github.com/matrix-org/synapse/issues/4662))
- Change from TravisCI to Buildkite for CI. ([\#4752](https://github.com/matrix-org/synapse/issues/4752))
- When presence is disabled don't send over replication. ([\#4757](https://github.com/matrix-org/synapse/issues/4757))
- Minor docstring fixes for MatrixFederationAgent. ([\#4765](https://github.com/matrix-org/synapse/issues/4765))
- Optimise EDU transmission for the federation_sender worker. ([\#4770](https://github.com/matrix-org/synapse/issues/4770))
- Update test_typing to use HomeserverTestCase. ([\#4771](https://github.com/matrix-org/synapse/issues/4771))
- Update URLs for riot.im icons and logos in the default notification templates. ([\#4779](https://github.com/matrix-org/synapse/issues/4779))
- Removed unnecessary $ from some federation endpoint path regexes. ([\#4794](https://github.com/matrix-org/synapse/issues/4794))
- Remove link to deleted title in README. ([\#4795](https://github.com/matrix-org/synapse/issues/4795))
- Clean up read-receipt handling. ([\#4797](https://github.com/matrix-org/synapse/issues/4797))
- Add some debug about processing read receipts. ([\#4798](https://github.com/matrix-org/synapse/issues/4798))
- Clean up some replication code. ([\#4799](https://github.com/matrix-org/synapse/issues/4799))
- Add some docstrings. ([\#4815](https://github.com/matrix-org/synapse/issues/4815))
- Add debug logger to try and track down #4422. ([\#4816](https://github.com/matrix-org/synapse/issues/4816))
- Make shutdown API send explanation message to room after users have been forced joined. ([\#4817](https://github.com/matrix-org/synapse/issues/4817))
- Update example_log_config.yaml. ([\#4820](https://github.com/matrix-org/synapse/issues/4820))
- Document the `generate` option for the docker image. ([\#4824](https://github.com/matrix-org/synapse/issues/4824))
- Fix check-newsfragment for debian-only changes. ([\#4825](https://github.com/matrix-org/synapse/issues/4825))
- Add some debug logging for device list updates to help with #4828. ([\#4828](https://github.com/matrix-org/synapse/issues/4828))
- Improve federation documentation, specifically .well-known support. Many thanks to @vaab. ([\#4832](https://github.com/matrix-org/synapse/issues/4832))
- Disable captcha registration by default in unit tests. ([\#4839](https://github.com/matrix-org/synapse/issues/4839))
- Add stuff back to the .gitignore. ([\#4843](https://github.com/matrix-org/synapse/issues/4843))
- Clarify what registration_shared_secret allows for. ([\#4844](https://github.com/matrix-org/synapse/issues/4844))
- Correctly log expected errors when fetching server keys. ([\#4847](https://github.com/matrix-org/synapse/issues/4847))
- Update install docs to explicitly state a full-chain (not just the top-level) TLS certificate must be provided to Synapse. This caused some people's Synapse ports to appear correct in a browser but still (rightfully so) upset the federation tester. ([\#4849](https://github.com/matrix-org/synapse/issues/4849))
- Move client read-receipt processing to federation sender worker. ([\#4852](https://github.com/matrix-org/synapse/issues/4852))
- Refactor federation TransactionQueue. ([\#4855](https://github.com/matrix-org/synapse/issues/4855))
- Comment out most options in the generated config. ([\#4863](https://github.com/matrix-org/synapse/issues/4863))
- Fix yaml library warnings by using safe_load. ([\#4869](https://github.com/matrix-org/synapse/issues/4869))
- Update Apache setup to remove location syntax. Thanks to @cwmke! ([\#4870](https://github.com/matrix-org/synapse/issues/4870))
- Reinstate test case that runs unit tests against oldest supported dependencies. ([\#4879](https://github.com/matrix-org/synapse/issues/4879))
- Update link to federation docs. ([\#4881](https://github.com/matrix-org/synapse/issues/4881))
- fix test_auto_create_auto_join_where_no_consent. ([\#4886](https://github.com/matrix-org/synapse/issues/4886))
- Use a regular HomeServerConfig object for unit tests rater than a Mock. ([\#4889](https://github.com/matrix-org/synapse/issues/4889))
- Add some notes about tuning postgres for larger deployments. ([\#4895](https://github.com/matrix-org/synapse/issues/4895))
- Add a config option for torture-testing worker replication. ([\#4902](https://github.com/matrix-org/synapse/issues/4902))
- Log requests which are simulated by the unit tests. ([\#4905](https://github.com/matrix-org/synapse/issues/4905))
- Allow newsfragments to end with exclamation marks. Exciting! ([\#4912](https://github.com/matrix-org/synapse/issues/4912))
- Refactor some more tests to use HomeserverTestCase. ([\#4913](https://github.com/matrix-org/synapse/issues/4913))
- Refactor out the state deltas portion of the user directory store and handler. ([\#4917](https://github.com/matrix-org/synapse/issues/4917))
- Fix nginx example in ACME doc. ([\#4923](https://github.com/matrix-org/synapse/issues/4923))
- Use an explicit dbname for postgres connections in the tests. ([\#4928](https://github.com/matrix-org/synapse/issues/4928))
- Fix `ClientReplicationStreamProtocol.__str__()`. ([\#4929](https://github.com/matrix-org/synapse/issues/4929))


Synapse 0.99.2 (2019-03-01)
===========================

Features
--------

- Added an HAProxy example in the reverse proxy documentation. Contributed by Benoît S. (“Benpro”). ([\#4541](https://github.com/matrix-org/synapse/issues/4541))
- Add basic optional sentry integration. ([\#4632](https://github.com/matrix-org/synapse/issues/4632), [\#4694](https://github.com/matrix-org/synapse/issues/4694))
- Transfer bans on room upgrade. ([\#4642](https://github.com/matrix-org/synapse/issues/4642))
- Add configurable room list publishing rules. ([\#4647](https://github.com/matrix-org/synapse/issues/4647))
- Support .well-known delegation when issuing certificates through ACME. ([\#4652](https://github.com/matrix-org/synapse/issues/4652))
- Allow registration and login to be handled by a worker instance. ([\#4666](https://github.com/matrix-org/synapse/issues/4666), [\#4670](https://github.com/matrix-org/synapse/issues/4670), [\#4682](https://github.com/matrix-org/synapse/issues/4682))
- Reduce the overhead of creating outbound federation connections over TLS by caching the TLS client options. ([\#4674](https://github.com/matrix-org/synapse/issues/4674))
- Add prometheus metrics for number of outgoing EDUs, by type. ([\#4695](https://github.com/matrix-org/synapse/issues/4695))
- Return correct error code when inviting a remote user to a room whose homeserver does not support the room version. ([\#4721](https://github.com/matrix-org/synapse/issues/4721))
- Prevent showing rooms to other servers that were set to not federate. ([\#4746](https://github.com/matrix-org/synapse/issues/4746))


Bugfixes
--------

- Fix possible exception when paginating. ([\#4263](https://github.com/matrix-org/synapse/issues/4263))
- The dependency checker now correctly reports a version mismatch for optional
  dependencies, instead of reporting the dependency missing. ([\#4450](https://github.com/matrix-org/synapse/issues/4450))
- Set CORS headers on .well-known requests. ([\#4651](https://github.com/matrix-org/synapse/issues/4651))
- Fix kicking guest users on guest access revocation in worker mode. ([\#4667](https://github.com/matrix-org/synapse/issues/4667))
- Fix an issue in the database migration script where the
  `e2e_room_keys.is_verified` column wasn't considered as
  a boolean. ([\#4680](https://github.com/matrix-org/synapse/issues/4680))
- Fix TaskStopped exceptions in logs when outbound requests time out. ([\#4690](https://github.com/matrix-org/synapse/issues/4690))
- Fix ACME config for python 2. ([\#4717](https://github.com/matrix-org/synapse/issues/4717))
- Fix paginating over federation persisting incorrect state. ([\#4718](https://github.com/matrix-org/synapse/issues/4718))


Internal Changes
----------------

- Run `black` to reformat user directory code. ([\#4635](https://github.com/matrix-org/synapse/issues/4635))
- Reduce number of exceptions we log. ([\#4643](https://github.com/matrix-org/synapse/issues/4643), [\#4668](https://github.com/matrix-org/synapse/issues/4668))
- Introduce upsert batching functionality in the database layer. ([\#4644](https://github.com/matrix-org/synapse/issues/4644))
- Fix various spelling mistakes. ([\#4657](https://github.com/matrix-org/synapse/issues/4657))
- Cleanup request exception logging. ([\#4669](https://github.com/matrix-org/synapse/issues/4669), [\#4737](https://github.com/matrix-org/synapse/issues/4737), [\#4738](https://github.com/matrix-org/synapse/issues/4738))
- Improve replication performance by reducing cache invalidation traffic. ([\#4671](https://github.com/matrix-org/synapse/issues/4671), [\#4715](https://github.com/matrix-org/synapse/issues/4715), [\#4748](https://github.com/matrix-org/synapse/issues/4748))
- Test against Postgres 9.5 as well as 9.4. ([\#4676](https://github.com/matrix-org/synapse/issues/4676))
- Run unit tests against python 3.7. ([\#4677](https://github.com/matrix-org/synapse/issues/4677))
- Attempt to clarify installation instructions/config. ([\#4681](https://github.com/matrix-org/synapse/issues/4681))
- Clean up gitignores. ([\#4688](https://github.com/matrix-org/synapse/issues/4688))
- Minor tweaks to acme docs. ([\#4689](https://github.com/matrix-org/synapse/issues/4689))
- Improve the logging in the pusher process. ([\#4691](https://github.com/matrix-org/synapse/issues/4691))
- Better checks on newsfragments. ([\#4698](https://github.com/matrix-org/synapse/issues/4698), [\#4750](https://github.com/matrix-org/synapse/issues/4750))
- Avoid some redundant work when processing read receipts. ([\#4706](https://github.com/matrix-org/synapse/issues/4706))
- Run `push_receipts_to_remotes` as background job. ([\#4707](https://github.com/matrix-org/synapse/issues/4707))
- Add prometheus metrics for number of badge update pushes. ([\#4709](https://github.com/matrix-org/synapse/issues/4709))
- Reduce pusher logging on startup ([\#4716](https://github.com/matrix-org/synapse/issues/4716))
- Don't log exceptions when failing to fetch remote server keys. ([\#4722](https://github.com/matrix-org/synapse/issues/4722))
- Correctly proxy exception in frontend_proxy worker. ([\#4723](https://github.com/matrix-org/synapse/issues/4723))
- Add database version to phonehome stats. ([\#4753](https://github.com/matrix-org/synapse/issues/4753))


Synapse 0.99.1.1 (2019-02-14)
=============================

Bugfixes
--------

- Fix "TypeError: '>' not supported" when starting without an existing certificate.
  Fix a bug where an existing certificate would be reprovisoned every day. ([\#4648](https://github.com/matrix-org/synapse/issues/4648))


Synapse 0.99.1 (2019-02-14)
===========================

Features
--------

- Include m.room.encryption on invites by default ([\#3902](https://github.com/matrix-org/synapse/issues/3902))
- Federation OpenID listener resource can now be activated even if federation is disabled ([\#4420](https://github.com/matrix-org/synapse/issues/4420))
- Synapse's ACME support will now correctly reprovision a certificate that approaches its expiry while Synapse is running. ([\#4522](https://github.com/matrix-org/synapse/issues/4522))
- Add ability to update backup versions ([\#4580](https://github.com/matrix-org/synapse/issues/4580))
- Allow the "unavailable" presence status for /sync.
  This change makes Synapse compliant with r0.4.0 of the Client-Server specification. ([\#4592](https://github.com/matrix-org/synapse/issues/4592))
- There is no longer any need to specify `no_tls`: it is inferred from the absence of TLS listeners ([\#4613](https://github.com/matrix-org/synapse/issues/4613), [\#4615](https://github.com/matrix-org/synapse/issues/4615), [\#4617](https://github.com/matrix-org/synapse/issues/4617), [\#4636](https://github.com/matrix-org/synapse/issues/4636))
- The default configuration no longer requires TLS certificates. ([\#4614](https://github.com/matrix-org/synapse/issues/4614))


Bugfixes
--------

- Copy over room federation ability on room upgrade. ([\#4530](https://github.com/matrix-org/synapse/issues/4530))
- Fix noisy "twisted.internet.task.TaskStopped" errors in logs ([\#4546](https://github.com/matrix-org/synapse/issues/4546))
- Synapse is now tolerant of the `tls_fingerprints` option being None or not specified. ([\#4589](https://github.com/matrix-org/synapse/issues/4589))
- Fix 'no unique or exclusion constraint' error ([\#4591](https://github.com/matrix-org/synapse/issues/4591))
- Transfer Server ACLs on room upgrade. ([\#4608](https://github.com/matrix-org/synapse/issues/4608))
- Fix failure to start when not TLS certificate was given even if TLS was disabled. ([\#4618](https://github.com/matrix-org/synapse/issues/4618))
- Fix self-signed cert notice from generate-config. ([\#4625](https://github.com/matrix-org/synapse/issues/4625))
- Fix performance of `user_ips` table deduplication background update ([\#4626](https://github.com/matrix-org/synapse/issues/4626), [\#4627](https://github.com/matrix-org/synapse/issues/4627))


Internal Changes
----------------

- Change the user directory state query to use a filtered call to the db instead of a generic one. ([\#4462](https://github.com/matrix-org/synapse/issues/4462))
- Reject federation transactions if they include more than 50 PDUs or 100 EDUs. ([\#4513](https://github.com/matrix-org/synapse/issues/4513))
- Reduce duplication of ``synapse.app`` code. ([\#4567](https://github.com/matrix-org/synapse/issues/4567))
- Fix docker upload job to push -py2 images. ([\#4576](https://github.com/matrix-org/synapse/issues/4576))
- Add port configuration information to ACME instructions. ([\#4578](https://github.com/matrix-org/synapse/issues/4578))
- Update MSC1711 FAQ to calrify .well-known usage ([\#4584](https://github.com/matrix-org/synapse/issues/4584))
- Clean up default listener configuration ([\#4586](https://github.com/matrix-org/synapse/issues/4586))
- Clarifications for reverse proxy docs ([\#4607](https://github.com/matrix-org/synapse/issues/4607))
- Move ClientTLSOptionsFactory init out of `refresh_certificates` ([\#4611](https://github.com/matrix-org/synapse/issues/4611))
- Fail cleanly if listener config lacks a 'port' ([\#4616](https://github.com/matrix-org/synapse/issues/4616))
- Remove redundant entries from docker config ([\#4619](https://github.com/matrix-org/synapse/issues/4619))
- README updates ([\#4621](https://github.com/matrix-org/synapse/issues/4621))


Synapse 0.99.0 (2019-02-05)
===========================

Synapse v0.99.x is a precursor to the upcoming Synapse v1.0 release. It contains foundational changes to room architecture and the federation security model necessary to support the upcoming r0 release of the Server to Server API.

Features
--------

- Synapse's cipher string has been updated to require ECDH key exchange. Configuring and generating dh_params is no longer required, and they will be ignored. ([\#4229](https://github.com/matrix-org/synapse/issues/4229))
- Synapse can now automatically provision TLS certificates via ACME (the protocol used by CAs like Let's Encrypt). ([\#4384](https://github.com/matrix-org/synapse/issues/4384), [\#4492](https://github.com/matrix-org/synapse/issues/4492), [\#4525](https://github.com/matrix-org/synapse/issues/4525), [\#4572](https://github.com/matrix-org/synapse/issues/4572), [\#4564](https://github.com/matrix-org/synapse/issues/4564), [\#4566](https://github.com/matrix-org/synapse/issues/4566), [\#4547](https://github.com/matrix-org/synapse/issues/4547), [\#4557](https://github.com/matrix-org/synapse/issues/4557))
- Implement MSC1708 (.well-known routing for server-server federation) ([\#4408](https://github.com/matrix-org/synapse/issues/4408), [\#4409](https://github.com/matrix-org/synapse/issues/4409), [\#4426](https://github.com/matrix-org/synapse/issues/4426), [\#4427](https://github.com/matrix-org/synapse/issues/4427), [\#4428](https://github.com/matrix-org/synapse/issues/4428), [\#4464](https://github.com/matrix-org/synapse/issues/4464), [\#4468](https://github.com/matrix-org/synapse/issues/4468), [\#4487](https://github.com/matrix-org/synapse/issues/4487), [\#4488](https://github.com/matrix-org/synapse/issues/4488), [\#4489](https://github.com/matrix-org/synapse/issues/4489), [\#4497](https://github.com/matrix-org/synapse/issues/4497), [\#4511](https://github.com/matrix-org/synapse/issues/4511), [\#4516](https://github.com/matrix-org/synapse/issues/4516), [\#4520](https://github.com/matrix-org/synapse/issues/4520), [\#4521](https://github.com/matrix-org/synapse/issues/4521), [\#4539](https://github.com/matrix-org/synapse/issues/4539), [\#4542](https://github.com/matrix-org/synapse/issues/4542), [\#4544](https://github.com/matrix-org/synapse/issues/4544))
- Search now includes results from predecessor rooms after a room upgrade. ([\#4415](https://github.com/matrix-org/synapse/issues/4415))
- Config option to disable requesting MSISDN on registration. ([\#4423](https://github.com/matrix-org/synapse/issues/4423))
- Add a metric for tracking event stream position of the user directory. ([\#4445](https://github.com/matrix-org/synapse/issues/4445))
- Support exposing server capabilities in CS API (MSC1753, MSC1804) ([\#4472](https://github.com/matrix-org/synapse/issues/4472), [81b7e7eed](https://github.com/matrix-org/synapse/commit/81b7e7eed323f55d6550e7a270a9dc2c4c7b0fe0)))
- Add support for room version 3 ([\#4483](https://github.com/matrix-org/synapse/issues/4483), [\#4499](https://github.com/matrix-org/synapse/issues/4499), [\#4515](https://github.com/matrix-org/synapse/issues/4515), [\#4523](https://github.com/matrix-org/synapse/issues/4523), [\#4535](https://github.com/matrix-org/synapse/issues/4535))
- Synapse will now reload TLS certificates from disk upon SIGHUP. ([\#4495](https://github.com/matrix-org/synapse/issues/4495), [\#4524](https://github.com/matrix-org/synapse/issues/4524))
- The matrixdotorg/synapse Docker images now use Python 3 by default. ([\#4558](https://github.com/matrix-org/synapse/issues/4558))

Bugfixes
--------

- Prevent users with access tokens predating the introduction of device IDs from creating spurious entries in the user_ips table. ([\#4369](https://github.com/matrix-org/synapse/issues/4369))
- Fix typo in ALL_USER_TYPES definition to ensure type is a tuple ([\#4392](https://github.com/matrix-org/synapse/issues/4392))
- Fix high CPU usage due to remote devicelist updates ([\#4397](https://github.com/matrix-org/synapse/issues/4397))
- Fix potential bug where creating or joining a room could fail ([\#4404](https://github.com/matrix-org/synapse/issues/4404))
- Fix bug when rejecting remote invites ([\#4405](https://github.com/matrix-org/synapse/issues/4405), [\#4527](https://github.com/matrix-org/synapse/issues/4527))
- Fix incorrect logcontexts after a Deferred was cancelled ([\#4407](https://github.com/matrix-org/synapse/issues/4407))
- Ensure encrypted room state is persisted across room upgrades. ([\#4411](https://github.com/matrix-org/synapse/issues/4411))
- Copy over whether a room is a direct message and any associated room tags on room upgrade. ([\#4412](https://github.com/matrix-org/synapse/issues/4412))
- Fix None guard in calling config.server.is_threepid_reserved ([\#4435](https://github.com/matrix-org/synapse/issues/4435))
- Don't send IP addresses as SNI ([\#4452](https://github.com/matrix-org/synapse/issues/4452))
- Fix UnboundLocalError in post_urlencoded_get_json ([\#4460](https://github.com/matrix-org/synapse/issues/4460))
- Add a timeout to filtered room directory queries. ([\#4461](https://github.com/matrix-org/synapse/issues/4461))
- Workaround for login error when using both LDAP and internal authentication. ([\#4486](https://github.com/matrix-org/synapse/issues/4486))
- Fix a bug where setting a relative consent directory path would cause a crash. ([\#4512](https://github.com/matrix-org/synapse/issues/4512))


Deprecations and Removals
-------------------------

- Synapse no longer generates self-signed TLS certificates when generating a configuration file. ([\#4509](https://github.com/matrix-org/synapse/issues/4509))


Improved Documentation
----------------------

- Update debian installation instructions ([\#4526](https://github.com/matrix-org/synapse/issues/4526))


Internal Changes
----------------

- Synapse will now take advantage of native UPSERT functionality in PostgreSQL 9.5+ and SQLite 3.24+. ([\#4306](https://github.com/matrix-org/synapse/issues/4306), [\#4459](https://github.com/matrix-org/synapse/issues/4459), [\#4466](https://github.com/matrix-org/synapse/issues/4466), [\#4471](https://github.com/matrix-org/synapse/issues/4471), [\#4477](https://github.com/matrix-org/synapse/issues/4477), [\#4505](https://github.com/matrix-org/synapse/issues/4505))
- Update README to use the new virtualenv everywhere ([\#4342](https://github.com/matrix-org/synapse/issues/4342))
- Add better logging for unexpected errors while sending transactions ([\#4368](https://github.com/matrix-org/synapse/issues/4368))
- Apply a unique index to the user_ips table, preventing duplicates. ([\#4370](https://github.com/matrix-org/synapse/issues/4370), [\#4432](https://github.com/matrix-org/synapse/issues/4432), [\#4434](https://github.com/matrix-org/synapse/issues/4434))
- Silence travis-ci build warnings by removing non-functional python3.6 ([\#4377](https://github.com/matrix-org/synapse/issues/4377))
- Fix a comment in the generated config file ([\#4387](https://github.com/matrix-org/synapse/issues/4387))
- Add ground work for implementing future federation API versions ([\#4390](https://github.com/matrix-org/synapse/issues/4390))
- Update dependencies on msgpack and pymacaroons to use the up-to-date packages. ([\#4399](https://github.com/matrix-org/synapse/issues/4399))
- Tweak codecov settings to make them less loud. ([\#4400](https://github.com/matrix-org/synapse/issues/4400))
- Implement server support for MSC1794 - Federation v2 Invite API ([\#4402](https://github.com/matrix-org/synapse/issues/4402))
- debian package: symlink to explicit python version ([\#4433](https://github.com/matrix-org/synapse/issues/4433))
- Add infrastructure to support different event formats ([\#4437](https://github.com/matrix-org/synapse/issues/4437), [\#4447](https://github.com/matrix-org/synapse/issues/4447), [\#4448](https://github.com/matrix-org/synapse/issues/4448), [\#4470](https://github.com/matrix-org/synapse/issues/4470), [\#4481](https://github.com/matrix-org/synapse/issues/4481), [\#4482](https://github.com/matrix-org/synapse/issues/4482), [\#4493](https://github.com/matrix-org/synapse/issues/4493), [\#4494](https://github.com/matrix-org/synapse/issues/4494), [\#4496](https://github.com/matrix-org/synapse/issues/4496), [\#4510](https://github.com/matrix-org/synapse/issues/4510), [\#4514](https://github.com/matrix-org/synapse/issues/4514))
- Generate the debian config during build ([\#4444](https://github.com/matrix-org/synapse/issues/4444))
- Clarify documentation for the `public_baseurl` config param ([\#4458](https://github.com/matrix-org/synapse/issues/4458), [\#4498](https://github.com/matrix-org/synapse/issues/4498))
- Fix quoting for allowed_local_3pids example config ([\#4476](https://github.com/matrix-org/synapse/issues/4476))
- Remove deprecated --process-dependency-links option from UPGRADE.rst ([\#4485](https://github.com/matrix-org/synapse/issues/4485))
- Make it possible to set the log level for tests via an environment variable ([\#4506](https://github.com/matrix-org/synapse/issues/4506))
- Reduce the log level of linearizer lock acquirement to DEBUG. ([\#4507](https://github.com/matrix-org/synapse/issues/4507))
- Fix code to comply with linting in PyFlakes 3.7.1. ([\#4519](https://github.com/matrix-org/synapse/issues/4519))
- Add some debug for membership syncing issues ([\#4538](https://github.com/matrix-org/synapse/issues/4538))
- Docker: only copy what we need to the build image ([\#4562](https://github.com/matrix-org/synapse/issues/4562))


Synapse 0.34.1.1 (2019-01-11)
=============================

This release fixes CVE-2019-5885 and is recommended for all users of Synapse 0.34.1.

This release is compatible with Python 2.7 and 3.5+. Python 3.7 is fully supported.

Bugfixes
--------

- Fix spontaneous logout on upgrade
  ([\#4374](https://github.com/matrix-org/synapse/issues/4374))


Synapse 0.34.1 (2019-01-09)
===========================

Internal Changes
----------------

- Add better logging for unexpected errors while sending transactions ([\#4361](https://github.com/matrix-org/synapse/issues/4361), [\#4362](https://github.com/matrix-org/synapse/issues/4362))


Synapse 0.34.1rc1 (2019-01-08)
==============================

Features
--------

- Special-case a support user for use in verifying behaviour of a given server. The support user does not appear in user directory or monthly active user counts. ([\#4141](https://github.com/matrix-org/synapse/issues/4141), [\#4344](https://github.com/matrix-org/synapse/issues/4344))
- Support for serving .well-known files ([\#4262](https://github.com/matrix-org/synapse/issues/4262))
- Rework SAML2 authentication ([\#4265](https://github.com/matrix-org/synapse/issues/4265), [\#4267](https://github.com/matrix-org/synapse/issues/4267))
- SAML2 authentication: Initialise user display name from SAML2 data ([\#4272](https://github.com/matrix-org/synapse/issues/4272))
- Synapse can now have its conditional/extra dependencies installed by pip. This functionality can be used by using `pip install matrix-synapse[feature]`, where feature is a comma separated list with the possible values `email.enable_notifs`, `matrix-synapse-ldap3`, `postgres`, `resources.consent`, `saml2`, `url_preview`, and `test`. If you want to install all optional dependencies, you can use "all" instead. ([\#4298](https://github.com/matrix-org/synapse/issues/4298), [\#4325](https://github.com/matrix-org/synapse/issues/4325), [\#4327](https://github.com/matrix-org/synapse/issues/4327))
- Add routes for reading account data. ([\#4303](https://github.com/matrix-org/synapse/issues/4303))
- Add opt-in support for v2 rooms ([\#4307](https://github.com/matrix-org/synapse/issues/4307))
- Add a script to generate a clean config file ([\#4315](https://github.com/matrix-org/synapse/issues/4315))
- Return server data in /login response ([\#4319](https://github.com/matrix-org/synapse/issues/4319))


Bugfixes
--------

- Fix contains_url check to be consistent with other instances in code-base and check that value is an instance of string. ([\#3405](https://github.com/matrix-org/synapse/issues/3405))
- Fix CAS login when username is not valid in an MXID ([\#4264](https://github.com/matrix-org/synapse/issues/4264))
- Send CORS headers for /media/config ([\#4279](https://github.com/matrix-org/synapse/issues/4279))
- Add 'sandbox' to CSP for media reprository ([\#4284](https://github.com/matrix-org/synapse/issues/4284))
- Make the new landing page prettier. ([\#4294](https://github.com/matrix-org/synapse/issues/4294))
- Fix deleting E2E room keys when using old SQLite versions. ([\#4295](https://github.com/matrix-org/synapse/issues/4295))
- The metric synapse_admin_mau:current previously did not update when config.mau_stats_only was set to True ([\#4305](https://github.com/matrix-org/synapse/issues/4305))
- Fixed per-room account data filters ([\#4309](https://github.com/matrix-org/synapse/issues/4309))
- Fix indentation in default config ([\#4313](https://github.com/matrix-org/synapse/issues/4313))
- Fix synapse:latest docker upload ([\#4316](https://github.com/matrix-org/synapse/issues/4316))
- Fix test_metric.py compatibility with prometheus_client 0.5. Contributed by Maarten de Vries <maarten@de-vri.es>. ([\#4317](https://github.com/matrix-org/synapse/issues/4317))
- Avoid packaging _trial_temp directory in -py3 debian packages ([\#4326](https://github.com/matrix-org/synapse/issues/4326))
- Check jinja version for consent resource ([\#4327](https://github.com/matrix-org/synapse/issues/4327))
- fix NPE in /messages by checking if all events were filtered out ([\#4330](https://github.com/matrix-org/synapse/issues/4330))
- Fix `python -m synapse.config` on Python 3. ([\#4356](https://github.com/matrix-org/synapse/issues/4356))


Deprecations and Removals
-------------------------

- Remove the deprecated v1/register API on Python 2. It was never ported to Python 3. ([\#4334](https://github.com/matrix-org/synapse/issues/4334))


Internal Changes
----------------

- Getting URL previews of IP addresses no longer fails on Python 3. ([\#4215](https://github.com/matrix-org/synapse/issues/4215))
- drop undocumented dependency on dateutil ([\#4266](https://github.com/matrix-org/synapse/issues/4266))
- Update the example systemd config to use a virtualenv ([\#4273](https://github.com/matrix-org/synapse/issues/4273))
- Update link to kernel DCO guide ([\#4274](https://github.com/matrix-org/synapse/issues/4274))
- Make isort tox check print diff when it fails ([\#4283](https://github.com/matrix-org/synapse/issues/4283))
- Log room_id in Unknown room errors ([\#4297](https://github.com/matrix-org/synapse/issues/4297))
- Documentation improvements for coturn setup. Contributed by Krithin Sitaram. ([\#4333](https://github.com/matrix-org/synapse/issues/4333))
- Update pull request template to use absolute links ([\#4341](https://github.com/matrix-org/synapse/issues/4341))
- Update README to not lie about required restart when updating TLS certificates ([\#4343](https://github.com/matrix-org/synapse/issues/4343))
- Update debian packaging for compatibility with transitional package ([\#4349](https://github.com/matrix-org/synapse/issues/4349))
- Fix command hint to generate a config file when trying to start without a config file ([\#4353](https://github.com/matrix-org/synapse/issues/4353))
- Add better logging for unexpected errors while sending transactions ([\#4358](https://github.com/matrix-org/synapse/issues/4358))


Synapse 0.34.0 (2018-12-20)
===========================

Synapse 0.34.0 is the first release to fully support Python 3. Synapse will now
run on Python versions 3.5 or 3.6 (as well as 2.7). Support for Python 3.7
remains experimental.

We recommend upgrading to Python 3, but make sure to read the [upgrade
notes](UPGRADE.rst#upgrading-to-v0340) when doing so.

Features
--------

- Add 'sandbox' to CSP for media reprository ([\#4284](https://github.com/matrix-org/synapse/issues/4284))
- Make the new landing page prettier. ([\#4294](https://github.com/matrix-org/synapse/issues/4294))
- Fix deleting E2E room keys when using old SQLite versions. ([\#4295](https://github.com/matrix-org/synapse/issues/4295))
- Add a welcome page for the client API port. Credit to @krombel! ([\#4289](https://github.com/matrix-org/synapse/issues/4289))
- Remove Matrix console from the default distribution ([\#4290](https://github.com/matrix-org/synapse/issues/4290))
- Add option to track MAU stats (but not limit people) ([\#3830](https://github.com/matrix-org/synapse/issues/3830))
- Add an option to enable recording IPs for appservice users ([\#3831](https://github.com/matrix-org/synapse/issues/3831))
- Rename login type `m.login.cas` to `m.login.sso` ([\#4220](https://github.com/matrix-org/synapse/issues/4220))
- Add an option to disable search for homeservers that may not be interested in it. ([\#4230](https://github.com/matrix-org/synapse/issues/4230))


Bugfixes
--------

- Pushrules can now again be made with non-ASCII rule IDs. ([\#4165](https://github.com/matrix-org/synapse/issues/4165))
- The media repository now no longer fails to decode UTF-8 filenames when downloading remote media. ([\#4176](https://github.com/matrix-org/synapse/issues/4176))
- URL previews now correctly decode non-UTF-8 text if the header contains a `<meta http-equiv="Content-Type"` header. ([\#4183](https://github.com/matrix-org/synapse/issues/4183))
- Fix an issue where public consent URLs had two slashes. ([\#4192](https://github.com/matrix-org/synapse/issues/4192))
- Fallback auth now accepts the session parameter on Python 3. ([\#4197](https://github.com/matrix-org/synapse/issues/4197))
- Remove riot.im from the list of trusted Identity Servers in the default configuration ([\#4207](https://github.com/matrix-org/synapse/issues/4207))
- fix start up failure when mau_limit_reserved_threepids set and db is postgres ([\#4211](https://github.com/matrix-org/synapse/issues/4211))
- Fix auto join failures for servers that require user consent ([\#4223](https://github.com/matrix-org/synapse/issues/4223))
- Fix exception caused by non-ascii event IDs ([\#4241](https://github.com/matrix-org/synapse/issues/4241))
- Pushers can now be unsubscribed from on Python 3. ([\#4250](https://github.com/matrix-org/synapse/issues/4250))
- Fix UnicodeDecodeError when postgres is configured to give non-English errors ([\#4253](https://github.com/matrix-org/synapse/issues/4253))


Internal Changes
----------------

- Debian packages utilising a virtualenv with bundled dependencies can now be built. ([\#4212](https://github.com/matrix-org/synapse/issues/4212))
- Disable pager when running git-show in CI ([\#4291](https://github.com/matrix-org/synapse/issues/4291))
- A coveragerc file has been added. ([\#4180](https://github.com/matrix-org/synapse/issues/4180))
- Add a GitHub pull request template and add multiple issue templates ([\#4182](https://github.com/matrix-org/synapse/issues/4182))
- Update README to reflect the fact that [\#1491](https://github.com/matrix-org/synapse/issues/1491) is fixed ([\#4188](https://github.com/matrix-org/synapse/issues/4188))
- Run the AS senders as background processes to fix warnings ([\#4189](https://github.com/matrix-org/synapse/issues/4189))
- Add some diagnostics to the tests to detect logcontext problems ([\#4190](https://github.com/matrix-org/synapse/issues/4190))
- Add missing `jpeg` package prerequisite for OpenBSD in README. ([\#4193](https://github.com/matrix-org/synapse/issues/4193))
- Add a note saying you need to manually reclaim disk space after using the Purge History API ([\#4200](https://github.com/matrix-org/synapse/issues/4200))
- More logcontext checking in unittests ([\#4205](https://github.com/matrix-org/synapse/issues/4205))
- Ignore `__pycache__` directories in the database schema folder ([\#4214](https://github.com/matrix-org/synapse/issues/4214))
- Add note to UPGRADE.rst about removing riot.im from list of trusted identity servers ([\#4224](https://github.com/matrix-org/synapse/issues/4224))
- Added automated coverage reporting to CI. ([\#4225](https://github.com/matrix-org/synapse/issues/4225))
- Garbage-collect after each unit test to fix logcontext leaks ([\#4227](https://github.com/matrix-org/synapse/issues/4227))
- add more detail to logging regarding "More than one row matched" error ([\#4234](https://github.com/matrix-org/synapse/issues/4234))
- Drop sent_transactions table ([\#4244](https://github.com/matrix-org/synapse/issues/4244))
- Add a basic .editorconfig ([\#4257](https://github.com/matrix-org/synapse/issues/4257))
- Update README.rst and UPGRADE.rst for Python 3. ([\#4260](https://github.com/matrix-org/synapse/issues/4260))
- Remove obsolete `verbose` and `log_file` settings from `homeserver.yaml` for Docker image. ([\#4261](https://github.com/matrix-org/synapse/issues/4261))


Synapse 0.33.9 (2018-11-19)
===========================

No significant changes.


Synapse 0.33.9rc1 (2018-11-14)
==============================

Features
--------

- Include flags to optionally add `m.login.terms` to the registration flow when consent tracking is enabled. ([\#4004](https://github.com/matrix-org/synapse/issues/4004), [\#4133](https://github.com/matrix-org/synapse/issues/4133), [\#4142](https://github.com/matrix-org/synapse/issues/4142), [\#4184](https://github.com/matrix-org/synapse/issues/4184))
- Support for replacing rooms with new ones ([\#4091](https://github.com/matrix-org/synapse/issues/4091), [\#4099](https://github.com/matrix-org/synapse/issues/4099), [\#4100](https://github.com/matrix-org/synapse/issues/4100), [\#4101](https://github.com/matrix-org/synapse/issues/4101))


Bugfixes
--------

- Fix exceptions when using the email mailer on Python 3. ([\#4095](https://github.com/matrix-org/synapse/issues/4095))
- Fix e2e key backup with more than 9 backup versions ([\#4113](https://github.com/matrix-org/synapse/issues/4113))
- Searches that request profile info now no longer fail with a 500. ([\#4122](https://github.com/matrix-org/synapse/issues/4122))
- fix return code of empty key backups ([\#4123](https://github.com/matrix-org/synapse/issues/4123))
- If the typing stream ID goes backwards (as on a worker when the master restarts), the worker's typing handler will no longer erroneously report rooms containing new typing events. ([\#4127](https://github.com/matrix-org/synapse/issues/4127))
- Fix table lock of device_lists_remote_cache which could freeze the application ([\#4132](https://github.com/matrix-org/synapse/issues/4132))
- Fix exception when using state res v2 algorithm ([\#4135](https://github.com/matrix-org/synapse/issues/4135))
- Generating the user consent URI no longer fails on Python 3. ([\#4140](https://github.com/matrix-org/synapse/issues/4140), [\#4163](https://github.com/matrix-org/synapse/issues/4163))
- Loading URL previews from the DB cache on Postgres will no longer cause Unicode type errors when responding to the request, and URL previews will no longer fail if the remote server returns a Content-Type header with the chartype in quotes. ([\#4157](https://github.com/matrix-org/synapse/issues/4157))
- The hash_password script now works on Python 3. ([\#4161](https://github.com/matrix-org/synapse/issues/4161))
- Fix noop checks when updating device keys, reducing spurious device list update notifications. ([\#4164](https://github.com/matrix-org/synapse/issues/4164))


Deprecations and Removals
-------------------------

- The disused and un-specced identicon generator has been removed. ([\#4106](https://github.com/matrix-org/synapse/issues/4106))
- The obsolete and non-functional /pull federation endpoint has been removed. ([\#4118](https://github.com/matrix-org/synapse/issues/4118))
- The deprecated v1 key exchange endpoints have been removed. ([\#4119](https://github.com/matrix-org/synapse/issues/4119))
- Synapse will no longer fetch keys using the fallback deprecated v1 key exchange method and will now always use v2. ([\#4120](https://github.com/matrix-org/synapse/issues/4120))


Internal Changes
----------------

- Fix build of Docker image with docker-compose ([\#3778](https://github.com/matrix-org/synapse/issues/3778))
- Delete unreferenced state groups during history purge ([\#4006](https://github.com/matrix-org/synapse/issues/4006))
- The "Received rdata" log messages on workers is now logged at DEBUG, not INFO. ([\#4108](https://github.com/matrix-org/synapse/issues/4108))
- Reduce replication traffic for device lists ([\#4109](https://github.com/matrix-org/synapse/issues/4109))
- Fix `synapse_replication_tcp_protocol_*_commands` metric label to be full command name, rather than just the first character ([\#4110](https://github.com/matrix-org/synapse/issues/4110))
- Log some bits about room creation ([\#4121](https://github.com/matrix-org/synapse/issues/4121))
- Fix `tox` failure on old systems ([\#4124](https://github.com/matrix-org/synapse/issues/4124))
- Add STATE_V2_TEST room version ([\#4128](https://github.com/matrix-org/synapse/issues/4128))
- Clean up event accesses and tests ([\#4137](https://github.com/matrix-org/synapse/issues/4137))
- The default logging config will now set an explicit log file encoding of UTF-8. ([\#4138](https://github.com/matrix-org/synapse/issues/4138))
- Add helpers functions for getting prev and auth events of an event ([\#4139](https://github.com/matrix-org/synapse/issues/4139))
- Add some tests for the HTTP pusher. ([\#4149](https://github.com/matrix-org/synapse/issues/4149))
- add purge_history.sh and purge_remote_media.sh scripts to contrib/ ([\#4155](https://github.com/matrix-org/synapse/issues/4155))
- HTTP tests have been refactored to contain less boilerplate. ([\#4156](https://github.com/matrix-org/synapse/issues/4156))
- Drop incoming events from federation for unknown rooms ([\#4165](https://github.com/matrix-org/synapse/issues/4165))


Synapse 0.33.8 (2018-11-01)
===========================

No significant changes.


Synapse 0.33.8rc2 (2018-10-31)
==============================

Bugfixes
--------

- Searches that request profile info now no longer fail with a 500. Fixes
  a regression in 0.33.8rc1. ([\#4122](https://github.com/matrix-org/synapse/issues/4122))


Synapse 0.33.8rc1 (2018-10-29)
==============================

Features
--------

- Servers with auto-join rooms will now automatically create those rooms when the first user registers ([\#3975](https://github.com/matrix-org/synapse/issues/3975))
- Add config option to control alias creation ([\#4051](https://github.com/matrix-org/synapse/issues/4051))
- The register_new_matrix_user script is now ported to Python 3. ([\#4085](https://github.com/matrix-org/synapse/issues/4085))
- Configure Docker image to listen on both ipv4 and ipv6. ([\#4089](https://github.com/matrix-org/synapse/issues/4089))


Bugfixes
--------

- Fix HTTP error response codes for federated group requests. ([\#3969](https://github.com/matrix-org/synapse/issues/3969))
- Fix issue where Python 3 users couldn't paginate /publicRooms ([\#4046](https://github.com/matrix-org/synapse/issues/4046))
- Fix URL previewing to work in Python 3.7 ([\#4050](https://github.com/matrix-org/synapse/issues/4050))
- synctl will use the right python executable to run worker processes ([\#4057](https://github.com/matrix-org/synapse/issues/4057))
- Manhole now works again on Python 3, instead of failing with a "couldn't match all kex parts" when connecting. ([\#4060](https://github.com/matrix-org/synapse/issues/4060), [\#4067](https://github.com/matrix-org/synapse/issues/4067))
- Fix some metrics being racy and causing exceptions when polled by Prometheus. ([\#4061](https://github.com/matrix-org/synapse/issues/4061))
- Fix bug which prevented email notifications from being sent unless an absolute path was given for `email_templates`. ([\#4068](https://github.com/matrix-org/synapse/issues/4068))
- Correctly account for cpu usage by background threads ([\#4074](https://github.com/matrix-org/synapse/issues/4074))
- Fix race condition where config defined reserved users were not being added to
  the monthly active user list prior to the homeserver reactor firing up ([\#4081](https://github.com/matrix-org/synapse/issues/4081))
- Fix bug which prevented backslashes being used in event field filters ([\#4083](https://github.com/matrix-org/synapse/issues/4083))


Internal Changes
----------------

- Add information about the [matrix-docker-ansible-deploy](https://github.com/spantaleev/matrix-docker-ansible-deploy) playbook ([\#3698](https://github.com/matrix-org/synapse/issues/3698))
- Add initial implementation of new state resolution algorithm ([\#3786](https://github.com/matrix-org/synapse/issues/3786))
- Reduce database load when fetching state groups ([\#4011](https://github.com/matrix-org/synapse/issues/4011))
- Various cleanups in the federation client code ([\#4031](https://github.com/matrix-org/synapse/issues/4031))
- Run the CircleCI builds in docker containers ([\#4041](https://github.com/matrix-org/synapse/issues/4041))
- Only colourise synctl output when attached to tty ([\#4049](https://github.com/matrix-org/synapse/issues/4049))
- Refactor room alias creation code ([\#4063](https://github.com/matrix-org/synapse/issues/4063))
- Make the Python scripts in the top-level scripts folders meet pep8 and pass flake8. ([\#4068](https://github.com/matrix-org/synapse/issues/4068))
- The README now contains example for the Caddy web server. Contributed by steamp0rt. ([\#4072](https://github.com/matrix-org/synapse/issues/4072))
- Add psutil as an explicit dependency ([\#4073](https://github.com/matrix-org/synapse/issues/4073))
- Clean up threading and logcontexts in pushers ([\#4075](https://github.com/matrix-org/synapse/issues/4075))
- Correctly manage logcontexts during startup to fix some "Unexpected logging context" warnings ([\#4076](https://github.com/matrix-org/synapse/issues/4076))
- Give some more things logcontexts ([\#4077](https://github.com/matrix-org/synapse/issues/4077))
- Clean up some bits of code which were flagged by the linter ([\#4082](https://github.com/matrix-org/synapse/issues/4082))


Synapse 0.33.7 (2018-10-18)
===========================

**Warning**: This release removes the example email notification templates from
`res/templates` (they are now internal to the python package). This should only
affect you if you (a) deploy your Synapse instance from a git checkout or a
github snapshot URL, and (b) have email notifications enabled.

If you have email notifications enabled, you should ensure that
`email.template_dir` is either configured to point at a directory where you
have installed customised templates, or leave it unset to use the default
templates.

Synapse 0.33.7rc2 (2018-10-17)
==============================

Features
--------

- Ship the example email templates as part of the package ([\#4052](https://github.com/matrix-org/synapse/issues/4052))

Bugfixes
--------

- Fix bug which made get_missing_events return too few events ([\#4045](https://github.com/matrix-org/synapse/issues/4045))


Synapse 0.33.7rc1 (2018-10-15)
==============================

Features
--------

- Add support for end-to-end key backup (MSC1687) ([\#4019](https://github.com/matrix-org/synapse/issues/4019))


Bugfixes
--------

- Fix bug in event persistence logic which caused 'NoneType is not iterable' ([\#3995](https://github.com/matrix-org/synapse/issues/3995))
- Fix exception in background metrics collection ([\#3996](https://github.com/matrix-org/synapse/issues/3996))
- Fix exception handling in fetching remote profiles ([\#3997](https://github.com/matrix-org/synapse/issues/3997))
- Fix handling of rejected threepid invites ([\#3999](https://github.com/matrix-org/synapse/issues/3999))
- Workers now start on Python 3. ([\#4027](https://github.com/matrix-org/synapse/issues/4027))
- Synapse now starts on Python 3.7. ([\#4033](https://github.com/matrix-org/synapse/issues/4033))


Internal Changes
----------------

- Log exceptions in looping calls ([\#4008](https://github.com/matrix-org/synapse/issues/4008))
- Optimisation for serving federation requests ([\#4017](https://github.com/matrix-org/synapse/issues/4017))
- Add metric to count number of non-empty sync responses ([\#4022](https://github.com/matrix-org/synapse/issues/4022))


Synapse 0.33.6 (2018-10-04)
===========================

Internal Changes
----------------

- Pin to prometheus_client<0.4 to avoid renaming all of our metrics ([\#4002](https://github.com/matrix-org/synapse/issues/4002))


Synapse 0.33.6rc1 (2018-10-03)
==============================

Features
--------

- Adding the ability to change MAX_UPLOAD_SIZE for the docker container variables. ([\#3883](https://github.com/matrix-org/synapse/issues/3883))
- Report "python_version" in the phone home stats ([\#3894](https://github.com/matrix-org/synapse/issues/3894))
- Always LL ourselves if we're in a room ([\#3916](https://github.com/matrix-org/synapse/issues/3916))
- Include eventid in log lines when processing incoming federation transactions ([\#3959](https://github.com/matrix-org/synapse/issues/3959))
- Remove spurious check which made 'localhost' servers not work ([\#3964](https://github.com/matrix-org/synapse/issues/3964))


Bugfixes
--------

- Fix problem when playing media from Chrome using direct URL (thanks @remjey!) ([\#3578](https://github.com/matrix-org/synapse/issues/3578))
- support registering regular users non-interactively with register_new_matrix_user script ([\#3836](https://github.com/matrix-org/synapse/issues/3836))
- Fix broken invite email links for self hosted riots ([\#3868](https://github.com/matrix-org/synapse/issues/3868))
- Don't ratelimit autojoins ([\#3879](https://github.com/matrix-org/synapse/issues/3879))
- Fix 500 error when deleting unknown room alias ([\#3889](https://github.com/matrix-org/synapse/issues/3889))
- Fix some b'abcd' noise in logs and metrics ([\#3892](https://github.com/matrix-org/synapse/issues/3892), [\#3895](https://github.com/matrix-org/synapse/issues/3895))
- When we join a room, always try the server we used for the alias lookup first, to avoid unresponsive and out-of-date servers. ([\#3899](https://github.com/matrix-org/synapse/issues/3899))
- Fix incorrect server-name indication for outgoing federation requests ([\#3907](https://github.com/matrix-org/synapse/issues/3907))
- Fix adding client IPs to the database failing on Python 3. ([\#3908](https://github.com/matrix-org/synapse/issues/3908))
- Fix bug where things occaisonally were not being timed out correctly. ([\#3910](https://github.com/matrix-org/synapse/issues/3910))
- Fix bug where outbound federation would stop talking to some servers when using workers ([\#3914](https://github.com/matrix-org/synapse/issues/3914))
- Fix some instances of ExpiringCache not expiring cache items ([\#3932](https://github.com/matrix-org/synapse/issues/3932), [\#3980](https://github.com/matrix-org/synapse/issues/3980))
- Fix out-of-bounds error when LLing yourself ([\#3936](https://github.com/matrix-org/synapse/issues/3936))
- Sending server notices regarding user consent now works on Python 3. ([\#3938](https://github.com/matrix-org/synapse/issues/3938))
- Fix exceptions from metrics handler ([\#3956](https://github.com/matrix-org/synapse/issues/3956))
- Fix error message for events with m.room.create missing from auth_events ([\#3960](https://github.com/matrix-org/synapse/issues/3960))
- Fix errors due to concurrent monthly_active_user upserts ([\#3961](https://github.com/matrix-org/synapse/issues/3961))
- Fix exceptions when processing incoming events over federation ([\#3968](https://github.com/matrix-org/synapse/issues/3968))
- Replaced all occurences of e.message with str(e). Contributed by Schnuffle ([\#3970](https://github.com/matrix-org/synapse/issues/3970))
- Fix lazy loaded sync in the presence of rejected state events ([\#3986](https://github.com/matrix-org/synapse/issues/3986))
- Fix error when logging incomplete HTTP requests ([\#3990](https://github.com/matrix-org/synapse/issues/3990))


Internal Changes
----------------

- Unit tests can now be run under PostgreSQL in Docker using ``test_postgresql.sh``. ([\#3699](https://github.com/matrix-org/synapse/issues/3699))
- Speed up calculation of typing updates for replication ([\#3794](https://github.com/matrix-org/synapse/issues/3794))
- Remove documentation regarding installation on Cygwin, the use of WSL is recommended instead. ([\#3873](https://github.com/matrix-org/synapse/issues/3873))
- Fix typo in README, synaspse -> synapse ([\#3897](https://github.com/matrix-org/synapse/issues/3897))
- Increase the timeout when filling missing events in federation requests ([\#3903](https://github.com/matrix-org/synapse/issues/3903))
- Improve the logging when handling a federation transaction ([\#3904](https://github.com/matrix-org/synapse/issues/3904), [\#3966](https://github.com/matrix-org/synapse/issues/3966))
- Improve logging of outbound federation requests ([\#3906](https://github.com/matrix-org/synapse/issues/3906), [\#3909](https://github.com/matrix-org/synapse/issues/3909))
- Fix the docker image building on python 3 ([\#3911](https://github.com/matrix-org/synapse/issues/3911))
- Add a regression test for logging failed HTTP requests on Python 3. ([\#3912](https://github.com/matrix-org/synapse/issues/3912))
- Comments and interface cleanup for on_receive_pdu ([\#3924](https://github.com/matrix-org/synapse/issues/3924))
- Fix spurious exceptions when remote http client closes conncetion ([\#3925](https://github.com/matrix-org/synapse/issues/3925))
- Log exceptions thrown by background tasks ([\#3927](https://github.com/matrix-org/synapse/issues/3927))
- Add a cache to get_destination_retry_timings ([\#3933](https://github.com/matrix-org/synapse/issues/3933), [\#3991](https://github.com/matrix-org/synapse/issues/3991))
- Automate pushes to docker hub ([\#3946](https://github.com/matrix-org/synapse/issues/3946))
- Require attrs 16.0.0 or later ([\#3947](https://github.com/matrix-org/synapse/issues/3947))
- Fix incompatibility with python3 on alpine ([\#3948](https://github.com/matrix-org/synapse/issues/3948))
- Run the test suite on the oldest supported versions of our dependencies in CI. ([\#3952](https://github.com/matrix-org/synapse/issues/3952))
- CircleCI now only runs merged jobs on PRs, and commit jobs on develop, master, and release branches. ([\#3957](https://github.com/matrix-org/synapse/issues/3957))
- Fix docstrings and add tests for state store methods ([\#3958](https://github.com/matrix-org/synapse/issues/3958))
- fix docstring for FederationClient.get_state_for_room ([\#3963](https://github.com/matrix-org/synapse/issues/3963))
- Run notify_app_services as a bg process ([\#3965](https://github.com/matrix-org/synapse/issues/3965))
- Clarifications in FederationHandler ([\#3967](https://github.com/matrix-org/synapse/issues/3967))
- Further reduce the docker image size ([\#3972](https://github.com/matrix-org/synapse/issues/3972))
- Build py3 docker images for docker hub too ([\#3976](https://github.com/matrix-org/synapse/issues/3976))
- Updated the installation instructions to point to the matrix-synapse package on PyPI. ([\#3985](https://github.com/matrix-org/synapse/issues/3985))
- Disable USE_FROZEN_DICTS for unittests by default. ([\#3987](https://github.com/matrix-org/synapse/issues/3987))
- Remove unused Jenkins and development related files from the repo. ([\#3988](https://github.com/matrix-org/synapse/issues/3988))
- Improve stacktraces in certain exceptions in the logs ([\#3989](https://github.com/matrix-org/synapse/issues/3989))


Synapse 0.33.5.1 (2018-09-25)
=============================

Internal Changes
----------------

- Fix incompatibility with older Twisted version in tests. Thanks @OlegGirko! ([\#3940](https://github.com/matrix-org/synapse/issues/3940))


Synapse 0.33.5 (2018-09-24)
===========================

No significant changes.


Synapse 0.33.5rc1 (2018-09-17)
==============================

Features
--------

- Python 3.5 and 3.6 support is now in beta. ([\#3576](https://github.com/matrix-org/synapse/issues/3576))
- Implement `event_format` filter param in `/sync` ([\#3790](https://github.com/matrix-org/synapse/issues/3790))
- Add synapse_admin_mau:registered_reserved_users metric to expose number of real reaserved users ([\#3846](https://github.com/matrix-org/synapse/issues/3846))


Bugfixes
--------

- Remove connection ID for replication prometheus metrics, as it creates a large number of new series. ([\#3788](https://github.com/matrix-org/synapse/issues/3788))
- guest users should not be part of mau total ([\#3800](https://github.com/matrix-org/synapse/issues/3800))
- Bump dependency on pyopenssl 16.x, to avoid incompatibility with recent Twisted. ([\#3804](https://github.com/matrix-org/synapse/issues/3804))
- Fix existing room tags not coming down sync when joining a room ([\#3810](https://github.com/matrix-org/synapse/issues/3810))
- Fix jwt import check ([\#3824](https://github.com/matrix-org/synapse/issues/3824))
- fix VOIP crashes under Python 3 (#3821) ([\#3835](https://github.com/matrix-org/synapse/issues/3835))
- Fix manhole so that it works with latest openssh clients ([\#3841](https://github.com/matrix-org/synapse/issues/3841))
- Fix outbound requests occasionally wedging, which can result in federation breaking between servers. ([\#3845](https://github.com/matrix-org/synapse/issues/3845))
- Show heroes if room name/canonical alias has been deleted ([\#3851](https://github.com/matrix-org/synapse/issues/3851))
- Fix handling of redacted events from federation ([\#3859](https://github.com/matrix-org/synapse/issues/3859))
-  ([\#3874](https://github.com/matrix-org/synapse/issues/3874))
- Mitigate outbound federation randomly becoming wedged ([\#3875](https://github.com/matrix-org/synapse/issues/3875))


Internal Changes
----------------

- CircleCI tests now run on the potential merge of a PR. ([\#3704](https://github.com/matrix-org/synapse/issues/3704))
- http/ is now ported to Python 3. ([\#3771](https://github.com/matrix-org/synapse/issues/3771))
- Improve human readable error messages for threepid registration/account update ([\#3789](https://github.com/matrix-org/synapse/issues/3789))
- Make /sync slightly faster by avoiding needless copies ([\#3795](https://github.com/matrix-org/synapse/issues/3795))
- handlers/ is now ported to Python 3. ([\#3803](https://github.com/matrix-org/synapse/issues/3803))
- Limit the number of PDUs/EDUs per federation transaction ([\#3805](https://github.com/matrix-org/synapse/issues/3805))
- Only start postgres instance for postgres tests on Travis CI ([\#3806](https://github.com/matrix-org/synapse/issues/3806))
- tests/ is now ported to Python 3. ([\#3808](https://github.com/matrix-org/synapse/issues/3808))
- crypto/ is now ported to Python 3. ([\#3822](https://github.com/matrix-org/synapse/issues/3822))
- rest/ is now ported to Python 3. ([\#3823](https://github.com/matrix-org/synapse/issues/3823))
- add some logging for the keyring queue ([\#3826](https://github.com/matrix-org/synapse/issues/3826))
- speed up lazy loading by 2-3x ([\#3827](https://github.com/matrix-org/synapse/issues/3827))
- Improved Dockerfile to remove build requirements after building reducing the image size. ([\#3834](https://github.com/matrix-org/synapse/issues/3834))
- Disable lazy loading for incremental syncs for now ([\#3840](https://github.com/matrix-org/synapse/issues/3840))
- federation/ is now ported to Python 3. ([\#3847](https://github.com/matrix-org/synapse/issues/3847))
- Log when we retry outbound requests ([\#3853](https://github.com/matrix-org/synapse/issues/3853))
- Removed some excess logging messages. ([\#3855](https://github.com/matrix-org/synapse/issues/3855))
- Speed up purge history for rooms that have been previously purged ([\#3856](https://github.com/matrix-org/synapse/issues/3856))
- Refactor some HTTP timeout code. ([\#3857](https://github.com/matrix-org/synapse/issues/3857))
- Fix running merged builds on CircleCI ([\#3858](https://github.com/matrix-org/synapse/issues/3858))
- Fix typo in replication stream exception. ([\#3860](https://github.com/matrix-org/synapse/issues/3860))
- Add in flight real time metrics for Measure blocks ([\#3871](https://github.com/matrix-org/synapse/issues/3871))
- Disable buffering and automatic retrying in treq requests to prevent timeouts. ([\#3872](https://github.com/matrix-org/synapse/issues/3872))
- mention jemalloc in the README ([\#3877](https://github.com/matrix-org/synapse/issues/3877))
- Remove unmaintained "nuke-room-from-db.sh" script ([\#3888](https://github.com/matrix-org/synapse/issues/3888))


Synapse 0.33.4 (2018-09-07)
===========================

Internal Changes
----------------

- Unignore synctl in .dockerignore to fix docker builds ([\#3802](https://github.com/matrix-org/synapse/issues/3802))


Synapse 0.33.4rc2 (2018-09-06)
==============================

Pull in security fixes from v0.33.3.1


Synapse 0.33.3.1 (2018-09-06)
=============================

SECURITY FIXES
--------------

- Fix an issue where event signatures were not always correctly validated ([\#3796](https://github.com/matrix-org/synapse/issues/3796))
- Fix an issue where server_acls could be circumvented for incoming events ([\#3796](https://github.com/matrix-org/synapse/issues/3796))


Internal Changes
----------------

- Unignore synctl in .dockerignore to fix docker builds ([\#3802](https://github.com/matrix-org/synapse/issues/3802))


Synapse 0.33.4rc1 (2018-09-04)
==============================

Features
--------

- Support profile API endpoints on workers ([\#3659](https://github.com/matrix-org/synapse/issues/3659))
- Server notices for resource limit blocking ([\#3680](https://github.com/matrix-org/synapse/issues/3680))
- Allow guests to use /rooms/:roomId/event/:eventId ([\#3724](https://github.com/matrix-org/synapse/issues/3724))
- Add mau_trial_days config param, so that users only get counted as MAU after N days. ([\#3749](https://github.com/matrix-org/synapse/issues/3749))
- Require twisted 17.1 or later (fixes [#3741](https://github.com/matrix-org/synapse/issues/3741)). ([\#3751](https://github.com/matrix-org/synapse/issues/3751))


Bugfixes
--------

- Fix error collecting prometheus metrics when run on dedicated thread due to threading concurrency issues ([\#3722](https://github.com/matrix-org/synapse/issues/3722))
- Fix bug where we resent "limit exceeded" server notices repeatedly ([\#3747](https://github.com/matrix-org/synapse/issues/3747))
- Fix bug where we broke sync when using limit_usage_by_mau but hadn't configured server notices ([\#3753](https://github.com/matrix-org/synapse/issues/3753))
- Fix 'federation_domain_whitelist' such that an empty list correctly blocks all outbound federation traffic ([\#3754](https://github.com/matrix-org/synapse/issues/3754))
- Fix tagging of server notice rooms ([\#3755](https://github.com/matrix-org/synapse/issues/3755), [\#3756](https://github.com/matrix-org/synapse/issues/3756))
- Fix 'admin_uri' config variable and error parameter to be 'admin_contact' to match the spec. ([\#3758](https://github.com/matrix-org/synapse/issues/3758))
- Don't return non-LL-member state in incremental sync state blocks ([\#3760](https://github.com/matrix-org/synapse/issues/3760))
- Fix bug in sending presence over federation ([\#3768](https://github.com/matrix-org/synapse/issues/3768))
- Fix bug where preserved threepid user comes to sign up and server is mau blocked ([\#3777](https://github.com/matrix-org/synapse/issues/3777))

Internal Changes
----------------

- Removed the link to the unmaintained matrix-synapse-auto-deploy project from the readme. ([\#3378](https://github.com/matrix-org/synapse/issues/3378))
- Refactor state module to support multiple room versions ([\#3673](https://github.com/matrix-org/synapse/issues/3673))
- The synapse.storage module has been ported to Python 3. ([\#3725](https://github.com/matrix-org/synapse/issues/3725))
- Split the state_group_cache into member and non-member state events (and so speed up LL /sync) ([\#3726](https://github.com/matrix-org/synapse/issues/3726))
- Log failure to authenticate remote servers as warnings (without stack traces) ([\#3727](https://github.com/matrix-org/synapse/issues/3727))
- The CONTRIBUTING guidelines have been updated to mention our use of Markdown and that .misc files have content. ([\#3730](https://github.com/matrix-org/synapse/issues/3730))
- Reference the need for an HTTP replication port when using the federation_reader worker ([\#3734](https://github.com/matrix-org/synapse/issues/3734))
- Fix minor spelling error in federation client documentation. ([\#3735](https://github.com/matrix-org/synapse/issues/3735))
- Remove redundant state resolution function ([\#3737](https://github.com/matrix-org/synapse/issues/3737))
- The test suite now passes on PostgreSQL. ([\#3740](https://github.com/matrix-org/synapse/issues/3740))
- Fix MAU cache invalidation due to missing yield ([\#3746](https://github.com/matrix-org/synapse/issues/3746))
- Make sure that we close db connections opened during init ([\#3764](https://github.com/matrix-org/synapse/issues/3764))


Synapse 0.33.3 (2018-08-22)
===========================

Bugfixes
--------

- Fix bug introduced in v0.33.3rc1 which made the ToS give a 500 error ([\#3732](https://github.com/matrix-org/synapse/issues/3732))


Synapse 0.33.3rc2 (2018-08-21)
==============================

Bugfixes
--------

- Fix bug in v0.33.3rc1 which caused infinite loops and OOMs ([\#3723](https://github.com/matrix-org/synapse/issues/3723))


Synapse 0.33.3rc1 (2018-08-21)
==============================

Features
--------

- Add support for the SNI extension to federation TLS connections. Thanks to @vojeroen! ([\#3439](https://github.com/matrix-org/synapse/issues/3439))
- Add /_media/r0/config ([\#3184](https://github.com/matrix-org/synapse/issues/3184))
- speed up /members API and add `at` and `membership` params as per MSC1227 ([\#3568](https://github.com/matrix-org/synapse/issues/3568))
- implement `summary` block in /sync response as per MSC688 ([\#3574](https://github.com/matrix-org/synapse/issues/3574))
- Add lazy-loading support to /messages as per MSC1227 ([\#3589](https://github.com/matrix-org/synapse/issues/3589))
- Add ability to limit number of monthly active users on the server ([\#3633](https://github.com/matrix-org/synapse/issues/3633))
- Support more federation endpoints on workers ([\#3653](https://github.com/matrix-org/synapse/issues/3653))
- Basic support for room versioning ([\#3654](https://github.com/matrix-org/synapse/issues/3654))
- Ability to disable client/server Synapse via conf toggle ([\#3655](https://github.com/matrix-org/synapse/issues/3655))
- Ability to whitelist specific threepids against monthly active user limiting ([\#3662](https://github.com/matrix-org/synapse/issues/3662))
- Add some metrics for the appservice and federation event sending loops ([\#3664](https://github.com/matrix-org/synapse/issues/3664))
- Where server is disabled, block ability for locked out users to read new messages ([\#3670](https://github.com/matrix-org/synapse/issues/3670))
- set admin uri via config, to be used in error messages where the user should contact the administrator ([\#3687](https://github.com/matrix-org/synapse/issues/3687))
- Synapse's presence functionality can now be disabled with the "use_presence" configuration option. ([\#3694](https://github.com/matrix-org/synapse/issues/3694))
- For resource limit blocked users, prevent writing into rooms ([\#3708](https://github.com/matrix-org/synapse/issues/3708))


Bugfixes
--------

- Fix occasional glitches in the synapse_event_persisted_position metric ([\#3658](https://github.com/matrix-org/synapse/issues/3658))
- Fix bug on deleting 3pid when using identity servers that don't support unbind API ([\#3661](https://github.com/matrix-org/synapse/issues/3661))
- Make the tests pass on Twisted < 18.7.0 ([\#3676](https://github.com/matrix-org/synapse/issues/3676))
- Don’t ship recaptcha_ajax.js, use it directly from Google ([\#3677](https://github.com/matrix-org/synapse/issues/3677))
- Fixes test_reap_monthly_active_users so it passes under postgres ([\#3681](https://github.com/matrix-org/synapse/issues/3681))
- Fix mau blocking calulation bug on login ([\#3689](https://github.com/matrix-org/synapse/issues/3689))
- Fix missing yield in synapse.storage.monthly_active_users.initialise_reserved_users ([\#3692](https://github.com/matrix-org/synapse/issues/3692))
- Improve HTTP request logging to include all requests ([\#3700](https://github.com/matrix-org/synapse/issues/3700))
- Avoid timing out requests while we are streaming back the response ([\#3701](https://github.com/matrix-org/synapse/issues/3701))
- Support more federation endpoints on workers ([\#3705](https://github.com/matrix-org/synapse/issues/3705), [\#3713](https://github.com/matrix-org/synapse/issues/3713))
- Fix "Starting db txn 'get_all_updated_receipts' from sentinel context" warning ([\#3710](https://github.com/matrix-org/synapse/issues/3710))
- Fix bug where `state_cache` cache factor ignored environment variables ([\#3719](https://github.com/matrix-org/synapse/issues/3719))


Deprecations and Removals
-------------------------

- The Shared-Secret registration method of the legacy v1/register REST endpoint has been removed. For a replacement, please see [the admin/register API documentation](https://github.com/matrix-org/synapse/blob/master/docs/admin_api/register_api.rst). ([\#3703](https://github.com/matrix-org/synapse/issues/3703))


Internal Changes
----------------

- The test suite now can run under PostgreSQL. ([\#3423](https://github.com/matrix-org/synapse/issues/3423))
- Refactor HTTP replication endpoints to reduce code duplication ([\#3632](https://github.com/matrix-org/synapse/issues/3632))
- Tests now correctly execute on Python 3. ([\#3647](https://github.com/matrix-org/synapse/issues/3647))
- Sytests can now be run inside a Docker container. ([\#3660](https://github.com/matrix-org/synapse/issues/3660))
- Port over enough to Python 3 to allow the sytests to start. ([\#3668](https://github.com/matrix-org/synapse/issues/3668))
- Update docker base image from alpine 3.7 to 3.8. ([\#3669](https://github.com/matrix-org/synapse/issues/3669))
- Rename synapse.util.async to synapse.util.async_helpers to mitigate async becoming a keyword on Python 3.7. ([\#3678](https://github.com/matrix-org/synapse/issues/3678))
- Synapse's tests are now formatted with the black autoformatter. ([\#3679](https://github.com/matrix-org/synapse/issues/3679))
- Implemented a new testing base class to reduce test boilerplate. ([\#3684](https://github.com/matrix-org/synapse/issues/3684))
- Rename MAU prometheus metrics ([\#3690](https://github.com/matrix-org/synapse/issues/3690))
- add new error type ResourceLimit ([\#3707](https://github.com/matrix-org/synapse/issues/3707))
- Logcontexts for replication command handlers ([\#3709](https://github.com/matrix-org/synapse/issues/3709))
- Update admin register API documentation to reference a real user ID. ([\#3712](https://github.com/matrix-org/synapse/issues/3712))


Synapse 0.33.2 (2018-08-09)
===========================

No significant changes.


Synapse 0.33.2rc1 (2018-08-07)
==============================

Features
--------

- add support for the lazy_loaded_members filter as per MSC1227 ([\#2970](https://github.com/matrix-org/synapse/issues/2970))
- add support for the include_redundant_members filter param as per MSC1227 ([\#3331](https://github.com/matrix-org/synapse/issues/3331))
- Add metrics to track resource usage by background processes ([\#3553](https://github.com/matrix-org/synapse/issues/3553), [\#3556](https://github.com/matrix-org/synapse/issues/3556), [\#3604](https://github.com/matrix-org/synapse/issues/3604), [\#3610](https://github.com/matrix-org/synapse/issues/3610))
- Add `code` label to `synapse_http_server_response_time_seconds` prometheus metric ([\#3554](https://github.com/matrix-org/synapse/issues/3554))
- Add support for client_reader to handle more APIs ([\#3555](https://github.com/matrix-org/synapse/issues/3555), [\#3597](https://github.com/matrix-org/synapse/issues/3597))
- make the /context API filter & lazy-load aware as per MSC1227 ([\#3567](https://github.com/matrix-org/synapse/issues/3567))
- Add ability to limit number of monthly active users on the server ([\#3630](https://github.com/matrix-org/synapse/issues/3630))
- When we fail to join a room over federation, pass the error code back to the client. ([\#3639](https://github.com/matrix-org/synapse/issues/3639))
- Add a new /admin/register API for non-interactively creating users. ([\#3415](https://github.com/matrix-org/synapse/issues/3415))


Bugfixes
--------

- Make /directory/list API return 404 for room not found instead of 400. Thanks to @fuzzmz! ([\#3620](https://github.com/matrix-org/synapse/issues/3620))
- Default inviter_display_name to mxid for email invites ([\#3391](https://github.com/matrix-org/synapse/issues/3391))
- Don't generate TURN credentials if no TURN config options are set ([\#3514](https://github.com/matrix-org/synapse/issues/3514))
- Correctly announce deleted devices over federation ([\#3520](https://github.com/matrix-org/synapse/issues/3520))
- Catch failures saving metrics captured by Measure, and instead log the faulty metrics information for further analysis. ([\#3548](https://github.com/matrix-org/synapse/issues/3548))
- Unicode passwords are now normalised before hashing, preventing the instance where two different devices or browsers might send a different UTF-8 sequence for the password. ([\#3569](https://github.com/matrix-org/synapse/issues/3569))
- Fix potential stack overflow and deadlock under heavy load ([\#3570](https://github.com/matrix-org/synapse/issues/3570))
- Respond with M_NOT_FOUND when profiles are not found locally or over federation. Fixes #3585 ([\#3585](https://github.com/matrix-org/synapse/issues/3585))
- Fix failure to persist events over federation under load ([\#3601](https://github.com/matrix-org/synapse/issues/3601))
- Fix updating of cached remote profiles ([\#3605](https://github.com/matrix-org/synapse/issues/3605))
- Fix 'tuple index out of range' error ([\#3607](https://github.com/matrix-org/synapse/issues/3607))
- Only import secrets when available (fix for py < 3.6) ([\#3626](https://github.com/matrix-org/synapse/issues/3626))


Internal Changes
----------------

- Remove redundant checks on who_forgot_in_room ([\#3350](https://github.com/matrix-org/synapse/issues/3350))
- Remove unnecessary event re-signing hacks ([\#3367](https://github.com/matrix-org/synapse/issues/3367))
- Rewrite cache list decorator ([\#3384](https://github.com/matrix-org/synapse/issues/3384))
- Move v1-only REST APIs into their own module. ([\#3460](https://github.com/matrix-org/synapse/issues/3460))
- Replace more instances of Python 2-only iteritems and itervalues uses. ([\#3562](https://github.com/matrix-org/synapse/issues/3562))
- Refactor EventContext to accept state during init ([\#3577](https://github.com/matrix-org/synapse/issues/3577))
- Improve Dockerfile and docker-compose instructions ([\#3543](https://github.com/matrix-org/synapse/issues/3543))
- Release notes are now in the Markdown format. ([\#3552](https://github.com/matrix-org/synapse/issues/3552))
- add config for pep8 ([\#3559](https://github.com/matrix-org/synapse/issues/3559))
- Merge Linearizer and Limiter ([\#3571](https://github.com/matrix-org/synapse/issues/3571), [\#3572](https://github.com/matrix-org/synapse/issues/3572))
- Lazily load state on master process when using workers to reduce DB consumption ([\#3579](https://github.com/matrix-org/synapse/issues/3579), [\#3581](https://github.com/matrix-org/synapse/issues/3581), [\#3582](https://github.com/matrix-org/synapse/issues/3582), [\#3584](https://github.com/matrix-org/synapse/issues/3584))
- Fixes and optimisations for resolve_state_groups ([\#3586](https://github.com/matrix-org/synapse/issues/3586))
- Improve logging for exceptions when handling PDUs ([\#3587](https://github.com/matrix-org/synapse/issues/3587))
- Add some measure blocks to persist_events ([\#3590](https://github.com/matrix-org/synapse/issues/3590))
- Fix some random logcontext leaks. ([\#3591](https://github.com/matrix-org/synapse/issues/3591), [\#3606](https://github.com/matrix-org/synapse/issues/3606))
- Speed up calculating state deltas in persist_event loop ([\#3592](https://github.com/matrix-org/synapse/issues/3592))
- Attempt to reduce amount of state pulled out of DB during persist_events ([\#3595](https://github.com/matrix-org/synapse/issues/3595))
- Fix a documentation typo in on_make_leave_request ([\#3609](https://github.com/matrix-org/synapse/issues/3609))
- Make EventStore inherit from EventFederationStore ([\#3612](https://github.com/matrix-org/synapse/issues/3612))
- Remove some redundant joins on event_edges.room_id ([\#3613](https://github.com/matrix-org/synapse/issues/3613))
- Stop populating events.content ([\#3614](https://github.com/matrix-org/synapse/issues/3614))
- Update the /send_leave path registration to use event_id rather than a transaction ID. ([\#3616](https://github.com/matrix-org/synapse/issues/3616))
- Refactor FederationHandler to move DB writes into separate functions ([\#3621](https://github.com/matrix-org/synapse/issues/3621))
- Remove unused field "pdu_failures" from transactions. ([\#3628](https://github.com/matrix-org/synapse/issues/3628))
- rename replication_layer to federation_client ([\#3634](https://github.com/matrix-org/synapse/issues/3634))
- Factor out exception handling in federation_client ([\#3638](https://github.com/matrix-org/synapse/issues/3638))
- Refactor location of docker build script. ([\#3644](https://github.com/matrix-org/synapse/issues/3644))