Synapse 1.15.0rc1 (2020-06-09)

==============================

Features
--------

- Advertise support for Client-Server API r0.6.0 and remove related unstable feature flags. ([\#6585](https://github.com/matrix-org/synapse/issues/6585))
- Add an option to disable autojoining rooms for guest accounts. ([\#6637](https://github.com/matrix-org/synapse/issues/6637))
- For SAML authentication, add the ability to pass email addresses to be added to new users' accounts via SAML attributes. Contributed by Christopher Cooper. ([\#7385](https://github.com/matrix-org/synapse/issues/7385))
- Add admin APIs to allow server admins to manage users' devices. Contributed by @dklimpel. ([\#7481](https://github.com/matrix-org/synapse/issues/7481))
- Add support for generating thumbnails for WebP images. Previously, users would see an empty box instead of preview image. ([\#7586](https://github.com/matrix-org/synapse/issues/7586))
- Support the standardized `m.login.sso` user-interactive authentication flow. ([\#7630](https://github.com/matrix-org/synapse/issues/7630))

Bugfixes
--------

- Allow new users to be registered via the admin API even if the monthly active user limit has been reached. Contributed by @dkimpel. ([\#7263](https://github.com/matrix-org/synapse/issues/7263))
- Fix email notifications not being enabled for new users when created via the Admin API. ([\#7267](https://github.com/matrix-org/synapse/issues/7267))
- Fix str placeholders in an instance of `PrepareDatabaseException`. Introduced in Synapse v1.8.0. ([\#7575](https://github.com/matrix-org/synapse/issues/7575))
- Fix a bug in automatic user creation during first time login with `m.login.jwt`. Regression in v1.6.0. Contributed by @olof. ([\#7585](https://github.com/matrix-org/synapse/issues/7585))
- Fix a bug causing the cross-signing keys to be ignored when resyncing a device list. ([\#7594](https://github.com/matrix-org/synapse/issues/7594))
- Fix metrics failing when there is a large number of active background processes. ([\#7597](https://github.com/matrix-org/synapse/issues/7597))
- Fix bug where returning rooms for a group would fail if it included a room that the server was not in. ([\#7599](https://github.com/matrix-org/synapse/issues/7599))
- Fix duplicate key violation when persisting read markers. ([\#7607](https://github.com/matrix-org/synapse/issues/7607))
- Prevent an entire iteration of the device list resync loop from failing if one server responds with a malformed result. ([\#7609](https://github.com/matrix-org/synapse/issues/7609))
- Fix exceptions when fetching events from a remote host fails. ([\#7622](https://github.com/matrix-org/synapse/issues/7622))
- Make `synctl restart` start synapse if it wasn't running. ([\#7624](https://github.com/matrix-org/synapse/issues/7624))
- Pass device information through to the login endpoint when using the login fallback. ([\#7629](https://github.com/matrix-org/synapse/issues/7629))
- Advertise the `m.login.token` login flow when OpenID Connect is enabled. ([\#7631](https://github.com/matrix-org/synapse/issues/7631))
- Fix bug in account data replication stream. ([\#7656](https://github.com/matrix-org/synapse/issues/7656))

Improved Documentation
----------------------

- Update the OpenBSD installation instructions. ([\#7587](https://github.com/matrix-org/synapse/issues/7587))
- Advertise Python 3.8 support in `setup.py`. ([\#7602](https://github.com/matrix-org/synapse/issues/7602))
- Add a link to `#synapse:matrix.org` in the troubleshooting section of the README. ([\#7603](https://github.com/matrix-org/synapse/issues/7603))
- Clarifications to the admin api documentation. ([\#7647](https://github.com/matrix-org/synapse/issues/7647))

Internal Changes
----------------

- Convert the identity handler to async/await. ([\#7561](https://github.com/matrix-org/synapse/issues/7561))
- Improve query performance for fetching state from a PostgreSQL database. ([\#7567](https://github.com/matrix-org/synapse/issues/7567))
- Speed up processing of federation stream RDATA rows. ([\#7584](https://github.com/matrix-org/synapse/issues/7584))
- Add comment to systemd example to show postgresql dependency. ([\#7591](https://github.com/matrix-org/synapse/issues/7591))
- Refactor `Ratelimiter` to limit the amount of expensive config value accesses. ([\#7595](https://github.com/matrix-org/synapse/issues/7595))
- Convert groups handlers to async/await. ([\#7600](https://github.com/matrix-org/synapse/issues/7600))
- Clean up exception handling in `SAML2ResponseResource`. ([\#7614](https://github.com/matrix-org/synapse/issues/7614))
- Check that all asynchronous tasks succeed and general cleanup of `MonthlyActiveUsersTestCase` and `TestMauLimit`. ([\#7619](https://github.com/matrix-org/synapse/issues/7619))
- Convert `get_user_id_by_threepid` to async/await. ([\#7620](https://github.com/matrix-org/synapse/issues/7620))
- Switch to upstream `dh-virtualenv` rather than our fork for Debian package builds. ([\#7621](https://github.com/matrix-org/synapse/issues/7621))
- Update CI scripts to check the number in the newsfile fragment. ([\#7623](https://github.com/matrix-org/synapse/issues/7623))
- Check if the localpart of a Matrix ID is reserved for guest users earlier in the registration flow, as well as when responding to requests to `/register/available`. ([\#7625](https://github.com/matrix-org/synapse/issues/7625))
- Minor cleanups to OpenID Connect integration. ([\#7628](https://github.com/matrix-org/synapse/issues/7628))
- Attempt to fix flaky test: `PhoneHomeStatsTestCase.test_performance_100`. ([\#7634](https://github.com/matrix-org/synapse/issues/7634))
- Fix typos of `m.olm.curve25519-aes-sha2` and `m.megolm.v1.aes-sha2` in comments, test files. ([\#7637](https://github.com/matrix-org/synapse/issues/7637))
- Convert user directory, state deltas, and stats handlers to async/await. ([\#7640](https://github.com/matrix-org/synapse/issues/7640))
- Remove some unused constants. ([\#7644](https://github.com/matrix-org/synapse/issues/7644))
- Fix type information on `assert_*_is_admin` methods. ([\#7645](https://github.com/matrix-org/synapse/issues/7645))
- Convert registration handler to async/await. ([\#7649](https://github.com/matrix-org/synapse/issues/7649))
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