The event still needs to have `auth_events` defined to be valid.

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

Part of MSC2716: https://github.com/matrix-org/matrix-doc/pull/2716

We did some work on making sure the `state_groups` were shared in
https://github.com/matrix-org/synapse/pull/10975

C.f. https://github.com/matrix-org/synapse/pull/11494#pullrequestreview-827780886

Create a new dict helper method `simple_insert_many_values_txn`, which takes
raw row values, rather than {key=>value} dicts. This saves us a bunch of dict
munging, and makes it easier to use generators rather than creating
intermediate lists and dicts.

this field is never read, so we may as well stop populating it.

This should fix pushers with an email in non-canonical form is used as
the pushkey.

And expand some type hints in the receipts storage module.

Co-authored-by: David Robertson <davidr@element.io>

Somehow I'd managed to get my database in a pickle with stream ids. These
changes were useful to debug.

Pull the DataStore from the HomeServer instance, which
always exists.

This reverts commit a77c3698.

* Move sync_token up to the top
* Pull out _get_ignored_users
* Try to signpost the body of `_generate_sync_entry_for_rooms`
* Pull out _calculate_user_changes

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

Fixes #11517

After #10847, `looping_background_call` would print an error in the logs
every time a non-async function was called. Since the error would be
caught and ignored immediately, there were no other side effects.

If, for some reason, we don't have the create event, we should still be able to
purge a room.

Stabilise support for MSC2918 refresh tokens as they have now been merged into the Matrix specification. (#11435)

As a step towards allowing back-channel logout for OIDC.

Due to updates to MSC2675 this includes a few fixes:

* Include bundled aggregations for /sync.
* Do not include bundled aggregations for /initialSync and /events.
* Do not bundle aggregations for state events.
* Clarifies comments and variable names.

Update backward extremity docs to make it clear that it does not indicate whether we have fetched an events' `prev_events` (#11469)

Spawning from https://github.com/matrix-org/synapse/pull/9445#discussion_r758958181



Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>

Support configuring the lifetime of non-refreshable access tokens separately to refreshable access tokens. (#11445)

Signed-off-by: Olivier Wilkinson (reivilibre) <oliverw@matrix.org>

by calling into `make_test_homeserver_synchronous`.

The function *could* have been inlined at this point but the function is big enough

and it felt fine to leave it as is.

At least there isn't a confusing name clash anymore!