changelog.d/12165.misc

-Remove lingering unstable references to MSC2403 (knocking).

changelog.d/12191.misc

-Avoid trying to calculate the state at outlier events.

changelog.d/12193.misc

-Omit sending "offline" presence updates to application services after they are initially configured.
\ No newline at end of file

changelog.d/12209.misc

-Switch to using a sequence to generate AS transaction IDs. Contributed by Nick Beeper. If running synapse with a dedicated appservice worker, this MUST be stopped before upgrading the main process and database.

changelog.d/12235.bugfix

-Fix a long-standing bug where events from ignored users were still considered for bundled aggregations.

changelog.d/12251.feature

-Offload the `update_client_ip` background job from the main process to the background worker, when using Redis-based replication.

changelog.d/12252.feature

-Move `update_client_ip` background job from the main process to the background worker.
\ No newline at end of file

changelog.d/12267.misc

-Add missing type hints for storage.

changelog.d/12271.doc

-Clarify documentation for running SyTest against Synapse, including use of Postgres and worker mode.
\ No newline at end of file

changelog.d/12280.misc

-Add missing type definitions for scripts in docker folder. Contributed by Jorge Florian.

changelog.d/12293.removal

-Remove the unused and unstable `/aggregations` endpoint which was removed from [MSC2675](https://github.com/matrix-org/matrix-doc/pull/2675).

changelog.d/12295.misc

-Move [MSC2654](https://github.com/matrix-org/matrix-doc/pull/2654) support behind an experimental configuration flag.

changelog.d/12302.feature

-Add a module callback to react to new 3PID (email address, phone number) associations.

changelog.d/12310.feature

-Add a configuration option to remove a specific set of rooms from sync responses.

changelog.d/12315.doc

-Document the behaviour of `LoggingTransaction.call_after` and `LoggingTransaction.call_on_exception` methods when transactions are retried.

changelog.d/12316.misc

-Avoid trying to calculate the state at outlier events.

changelog.d/12317.misc

-Update docstrings to explain how to decipher live and historic pagination tokens.

changelog.d/12321.misc

-Add ground work for speeding up device list updates for users in large numbers of rooms.

changelog.d/12326.misc

-Fix typechecker problems exposed by signedjson 1.1.2.

changelog.d/12327.feature

-Add a module callback to react to account data changes.