ynapse 1.36.0rc1 (2021-06-08)

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

Features
--------

- Add new endpoint `/_matrix/client/r0/rooms/{roomId}/aliases` from Client-Server API r0.6.1 (previously [MSC2432](https://github.com/matrix-org/matrix-doc/pull/2432)). ([\#9224](https://github.com/matrix-org/synapse/issues/9224))
- Improve performance of incoming federation transactions in large rooms. ([\#9953](https://github.com/matrix-org/synapse/issues/9953), [\#9973](https://github.com/matrix-org/synapse/issues/9973))
- Rewrite logic around verifying JSON object and fetching server keys to be more performant and use less memory. ([\#10035](https://github.com/matrix-org/synapse/issues/10035))
- Add new admin APIs for unprotecting local media from quarantine. Contributed by @dklimpel. ([\#10040](https://github.com/matrix-org/synapse/issues/10040))
- Add new admin APIs to remove media by media ID from quarantine. Contributed by @dklimpel. ([\#10044](https://github.com/matrix-org/synapse/issues/10044))
- Make reason and score parameters optional for reporting content. Implements [MSC2414](https://github.com/matrix-org/matrix-doc/pull/2414). Contributed by Callum Brown. ([\#10077](https://github.com/matrix-org/synapse/issues/10077))
- Add support for routing more requests to workers. ([\#10084](https://github.com/matrix-org/synapse/issues/10084))
- Report OpenTracing spans for database activity. ([\#10113](https://github.com/matrix-org/synapse/issues/10113), [\#10136](https://github.com/matrix-org/synapse/issues/10136), [\#10141](https://github.com/matrix-org/synapse/issues/10141))
- Significantly reduce memory usage of joining large remote rooms. ([\#10117](https://github.com/matrix-org/synapse/issues/10117))

Bugfixes
--------

- Fixed a bug causing replication requests to fail when receiving a lot of events via federation. ([\#10082](https://github.com/matrix-org/synapse/issues/10082))
- Fix a bug in the `force_tracing_for_users` option introduced in Synapse v1.35 which meant that the OpenTracing spans produced were missing most tags. ([\#10092](https://github.com/matrix-org/synapse/issues/10092))
- Fixed a bug that could cause Synapse to stop notifying application services. Contributed by Willem Mulder. ([\#10107](https://github.com/matrix-org/synapse/issues/10107))
- Fix bug where the server would attempt to fetch the same history in the room from a remote server multiple times in parallel. ([\#10116](https://github.com/matrix-org/synapse/issues/10116))
- Fix a bug introduced in Synapse 1.33.0 which caused replication requests to fail when receiving a lot of very large events via federation. ([\#10118](https://github.com/matrix-org/synapse/issues/10118))
- Fix bug when using workers where pagination requests failed if a remote server returned zero events from `/backfill`. Introduced in 1.35.0. ([\#10133](https://github.com/matrix-org/synapse/issues/10133))

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

- Clarify security note regarding hosting Synapse on the same domain as other web applications. ([\#9221](https://github.com/matrix-org/synapse/issues/9221))
- Update CAPTCHA documentation to mention turning off the verify origin feature. Contributed by @aaronraimist. ([\#10046](https://github.com/matrix-org/synapse/issues/10046))
- Tweak wording of database recommendation in `INSTALL.md`. Contributed by @aaronraimist. ([\#10057](https://github.com/matrix-org/synapse/issues/10057))
- Add initial infrastructure for rendering Synapse documentation with mdbook. ([\#10086](https://github.com/matrix-org/synapse/issues/10086))
- Convert the remaining Admin API documentation files to markdown. ([\#10089](https://github.com/matrix-org/synapse/issues/10089))
- Make a link in docs use HTTPS. Contributed by @RhnSharma. ([\#10130](https://github.com/matrix-org/synapse/issues/10130))
- Fix broken link in Docker docs. ([\#10132](https://github.com/matrix-org/synapse/issues/10132))

Deprecations and Removals
-------------------------

- Remove the experimental `spaces_enabled` flag. The spaces features are always available now. ([\#10063](https://github.com/matrix-org/synapse/issues/10063))

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

- Tell CircleCI to build Docker images from `main` branch. ([\#9906](https://github.com/matrix-org/synapse/issues/9906))
- Simplify naming convention for release branches to only include the major and minor version numbers. ([\#10013](https://github.com/matrix-org/synapse/issues/10013))
- Add `parse_strings_from_args` for parsing an array from query parameters. ([\#10048](https://github.com/matrix-org/synapse/issues/10048), [\#10137](https://github.com/matrix-org/synapse/issues/10137))
- Remove some dead code regarding TLS certificate handling. ([\#10054](https://github.com/matrix-org/synapse/issues/10054))
- Remove redundant, unmaintained `convert_server_keys` script. ([\#10055](https://github.com/matrix-org/synapse/issues/10055))
- Improve the error message printed by synctl when synapse fails to start. ([\#10059](https://github.com/matrix-org/synapse/issues/10059))
- Fix GitHub Actions lint for newsfragments. ([\#10069](https://github.com/matrix-org/synapse/issues/10069))
- Update opentracing to inject the right context into the carrier. ([\#10074](https://github.com/matrix-org/synapse/issues/10074))
- Fix up `BatchingQueue` implementation. ([\#10078](https://github.com/matrix-org/synapse/issues/10078))
- Log method and path when dropping request due to size limit. ([\#10091](https://github.com/matrix-org/synapse/issues/10091))
- In Github Actions workflows, summarize the Sytest results in an easy-to-read format. ([\#10094](https://github.com/matrix-org/synapse/issues/10094))
- Make `/sync` do fewer state resolutions. ([\#10102](https://github.com/matrix-org/synapse/issues/10102))
- Add missing type hints to the admin API servlets. ([\#10105](https://github.com/matrix-org/synapse/issues/10105))
- Improve opentracing annotations for `Notifier`. ([\#10111](https://github.com/matrix-org/synapse/issues/10111))
- Enable Prometheus metrics for the jaeger client library. ([\#10112](https://github.com/matrix-org/synapse/issues/10112))
- Work to improve the responsiveness of `/sync` requests. ([\#10124](https://github.com/matrix-org/synapse/issues/10124))
- OpenTracing: use a consistent name for background processes. ([\#10135](https://github.com/matrix-org/synapse/issues/10135))
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