Synapse 1.110.0rc1 (2024-06-26)

Add initial implementation of an experimental MSC3575 Sliding Sync /sync endpoint. (#17187)
Add experimental support for MSC3823 - Account suspension. (#17255)
Improve ratelimiting in Synapse. (#17256)
Add support for the unstable MSC4151 report room API. (#17270, #17296)
Filter for public and empty rooms added to Admin-API List Room API. (#17276)
Add is_dm filtering to experimental MSC3575 Sliding Sync /sync endpoint. (#17277)
Add is_encrypted filtering to experimental MSC3575 Sliding Sync /sync endpoint. (#17281)
Include user membership in events served to clients, per MSC4115. (#17282)
Do not require user-interactive authentication for uploading cross-signing keys for the first time, per MSC3967. (#17284)
Add stream_ordering sort to experimental MSC3575 Sliding Sync /sync endpoint. (#17293)
register_new_matrix_user now supports a --password-file flag, which
is useful for scripting. (#17294)
register_new_matrix_user now supports a --exists-ok flag to allow registration of users that already exist in the database.
This is useful for scripts that bootstrap user accounts with initial passwords. (#17304)
Add support for via query parameter from MSC4156. (#17322)
Add is_invite filtering to experimental MSC3575 Sliding Sync /sync endpoint. (#17335)
Support MSC3916 by adding a federation /download endpoint. (#17350)

Fix searching for users with their exact localpart whose ID includes a hyphen. (#17254)
Fix wrong retention policy being used when filtering events. (#17272)
Fix bug where OTKs were not always included in /sync response when using workers. (#17275)
Fix a long-standing bug where an invalid 'from' parameter to /notifications would result in an Internal Server Error. (#17283)
Fix edge case in /sync returning the wrong the state when using sharded event persisters. (#17295)
Add initial implementation of an experimental MSC3575 Sliding Sync /sync endpoint. (#17301)
Fix email notification subject when invited to a space. (#17336)

Add missing quotes for example for exclude_rooms_from_sync. (#17308)
Update header in the README to visually fix the the auto-generated table of contents. (#17329)
Fix stale references to the Foundation's Security Disclosure Policy. (#17341)
Add default values for rc_invites.per_issuer to docs. (#17347)
Fix an error in the docs for search_all_users parameter under user_directory. (#17348)

Remove unused expire_access_token option in the Synapse Docker config file. Contributed by @AaronDewes. (#17198)
Use fully-qualified PersistedEventPosition when returning RoomsForUser to facilitate proper comparisons and RoomStreamToken generation. (#17265)
Add debug logging for when room keys are uploaded, including whether they are replacing other room keys. (#17266)
Handle OTK uploads off master. (#17271)
Don't try and resync devices for remote users whose servers are marked as down. (#17273)
Re-organize Pydantic models and types used in handlers. (#17279)
Expose the worker instance that persisted the event on event.internal_metadata.instance_name. (#17300)
Update the README with Element branding, improve headers and fix the #synapse:matrix.org support room link rendering. (#17324)
Change path of the experimental MSC3575 Sliding Sync implementation to /org.matrix.simplified_msc3575/sync since our simplified API is slightly incompatible with what's in the current MSC. (#17331)
Handle device lists notifications for large accounts more efficiently in worker mode. (#17333, #17358)
Do not block event sending/receiving while calculating large event auth chains. (#17338)
Tidy up parse_integer docs and call sites to reflect the fact that they require non-negative integers by default, and bring parse_integer_from_args default in alignment. Contributed by Denis Kasak (@dkasak). (#17339)

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