* Prefer `HTTPStatus` over plain `int`

This is an Opinion that no-one has seemed to object to yet.

* `--disallow-untyped-defs` for `tests.rest.client.test_directory`
* Improve synapse's annotations for deleting aliases
* Test case for deleting a room alias
* Changelog

* change display names/avatar URLS to None if they contain null bytes

* add changelog

* add POC test, requested changes

* add a saner test and remove old one

* update test to verify that display name has been changed to None

* make test less fragile

* Make DataStore inherit from EventForwardExtremitiesStore before CacheInvalidationWorkerStore

the former implicitly inherits from the latter, so they should be
ordered like this when used.

* Annotate HomeserverTestCase.servlets
* Correct annotation of federation_auth_origin
* Use AnyStr custom_headers instead of a Union

This allows (str, str) and (bytes, bytes).
This disallows (str, bytes) and (bytes, str)

* DomainSpecificString.SIGIL is a ClassVar

Signed-off-by: Dirk Klimpel <dirk@klimpel.org>

I'm not sure why this was excluded---it seemed to be passing for me. But
it's easy enough to fixup.

Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>

Signed-off-by: Jonas Zeunert <jonas@zeunert.org>

as of #11012, these parameters are unused.

Synapse 1.47.0rc2 (2021-11-10)
==============================

This fixes an issue with publishing the Debian packages for 1.47.0rc1.
It is otherwise identical to 1.47.0rc1.

Context: https://github.com/matrix-org/synapse/pull/11114/files#r741643968

This was due to a conflict between #11282, which changed
mypy configuration, and #11228, a normal change.

Signed-off-by: Dan Callahan <danc@element.io>

Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>

Co-authored-by: Dirk Klimpel <5740567+dklimpel@users.noreply.github.com>
Co-authored-by: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com>

Adds experimental support for `relation_types` and `relation_senders`
fields for filters.

When fetching remote devices for the first time, we did not correctly include the cross signing keys in the returned results.

c.f. #11159

Co-authored-by: reivilibre <olivier@librepush.net>

`get_insertion_event_by_batch_id` -> `get_insertion_event_id_by_batch_id`

Split out from https://github.com/matrix-org/synapse/pull/11114