changelog.d/11097.feature

-Advertise support for Client-Server API r0.6.1.
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changelog.d/11098.misc

-Add type hints to `synapse.events`.

changelog.d/11099.feature

-Add search by room ID and room alias to List Room admin API.
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changelog.d/11126.feature

-Add an `on_new_event` third-party rules callback to allow Synapse modules to act after an event has been sent into a room.

changelog.d/11128.doc

-Improve example HAProxy config in the docs to properly handle host headers with port information. This is required for federation over port 443 to work correctly.

changelog.d/11129.bugfix

-Fix long-standing bug where verification requests could fail in certain cases if whitelist was in place but did not include your own homeserver.
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changelog.d/11137.misc

-Remove and document unnecessary `RoomStreamToken` checks in application service ephemeral event code.
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changelog.d/11147.feature

-Add a module API method to update a user's membership in a room.

changelog.d/11151.doc

-Add documentation for using Authentik as an OpenID Connect Identity Provider. Contributed by @samip5.
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changelog.d/11164.misc

-Add type hints so that `synapse.http` passes `mypy` checks.
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changelog.d/11166.misc

-Update scripts to pass Shellcheck lints.

changelog.d/11171.misc

-Add knock information in admin export. Contributed by Rafael Gonçalves.

changelog.d/11178.feature

-Add metrics for thread pool usage.

changelog.d/11179.misc

-Add tests to check that `ClientIpStore.get_last_client_ip_by_device` and `get_user_ip_and_agents` combine database and in-memory data correctly.

changelog.d/11187.feature

-Support the stable room type field for [MSC3288](https://github.com/matrix-org/matrix-doc/pull/3288).

changelog.d/11188.bugfix

-Allow an empty list of `state_events_at_start` to be sent when using the [MSC2716](https://github.com/matrix-org/matrix-doc/pull/2716) `/batch_send` endpoint and the author of the historical messages is already part of the current room state at the given `?prev_event_id`.

changelog.d/11191.bugfix

-Fix a bug introduced in Synapse 1.45.0 which prevented the `synapse_review_recent_signups` script from running. Contributed by @samuel-p.

changelog.d/11194.misc

-Refactor `Filter` to check different fields depending on the data type.

changelog.d/11198.doc

-Clarify lack of support for Windows.

changelog.d/11199.bugfix

-Delete `to_device` messages for hidden devices that will never be read, reducing database size.
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