1.11.0rc1

changelog.d/6858.misc

-Refactoring work in preparation for changing the event redaction algorithm.

changelog.d/6862.misc

-Reduce amount we log at `INFO` level.

changelog.d/6864.misc

-Limit the number of events that can be requested by the backfill federation API to 100.

changelog.d/6866.feature

-Add ability to run some group APIs on workers.

changelog.d/6869.misc

-Remove unused `get_room_stats_state` method.

changelog.d/6871.misc

-Add typing to `synapse.federation.sender` and port to async/await.

changelog.d/6872.misc

-Refactor _EventInternalMetadata object to improve type safety.

changelog.d/6873.feature

-Add ability to route federation user device queries to workers.

changelog.d/6877.removal

-Remove `m.lazy_load_members` from `unstable_features` since lazy loading is in the stable Client-Server API version r0.5.0.

changelog.d/6882.misc

-Reject device display names over 100 characters in length.

changelog.d/6883.misc

-Add an additional entry to the SyTest blacklist for worker mode.

changelog.d/6887.misc

-Fix the use of sed in the linting scripts when using BSD sed.

changelog.d/6888.feature

-The result of a user directory search can now be filtered via the spam checker.

changelog.d/6891.doc

-Spell out that the last event sent to a room won't be deleted by a purge. 

changelog.d/6901.misc

-Return a 404 instead of 200 for querying information of a non-existant user through the admin API.
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changelog.d/6904.removal

-Stop sending alias events during adding / removing aliases. Check alt_aliases in the latest canonical aliases event when deleting an alias.

changelog.d/6905.doc

-Update Synapse's documentation to warn about the deprecation of ACME v1.

changelog.d/6906.doc

-Add documentation for the spam checker.

changelog.d/6907.doc

-Update Synapse's documentation to warn about the deprecation of ACME v1.

changelog.d/6909.doc

-Update Synapse's documentation to warn about the deprecation of ACME v1.