1.20.0rc1

changelog.d/8171.misc

-Make `SlavedIdTracker.advance` have the same interface as `MultiWriterIDGenerator`.

changelog.d/8173.misc

-Convert various parts of the codebase to async/await.

changelog.d/8174.misc

-Remove unused `is_guest` parameter from, and add safeguard to, `MessageHandler.get_room_data`.
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changelog.d/8175.misc

-Standardize the mypy configuration.

changelog.d/8176.feature

-Add support for shadow-banning users (ignoring any message send requests).

changelog.d/8179.misc

-Add functions to `MultiWriterIdGen` used by events stream.

changelog.d/8181.misc

-Remove unused `is_guest` parameter from, and add safeguard to, `MessageHandler.get_room_data`.
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changelog.d/8182.misc

-Refactor some of `LoginRestServlet`'s helper methods, and move them to `AuthHandler` for easier reuse.
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changelog.d/8183.misc

-Add type hints to `synapse.state`.

changelog.d/8187.misc

-Add type hints to `synapse.storage.database`.

changelog.d/8189.doc

-Explain better what GDPR-erased means when deactivating a user.

changelog.d/8190.bugfix

-Fix logging in via OpenID Connect with a provider that uses integer user IDs.

changelog.d/8191.misc

-Convert various parts of the codebase to async/await.

changelog.d/8192.misc

-Convert various parts of the codebase to async/await.

changelog.d/8193.misc

-Convert various parts of the codebase to async/await.

changelog.d/8194.misc

-Convert various parts of the codebase to async/await.

changelog.d/8195.misc

-Convert various parts of the codebase to async/await.

changelog.d/8196.misc

-Fix `wait_for_stream_position` to allow multiple waiters on same stream ID.

changelog.d/8197.misc

-Convert various parts of the codebase to async/await.

changelog.d/8198.feature

-Optimise `/federation/v1/user/devices/` API by only returning devices with encryption keys.