Changes in synapse v0.21.0-rc3 (2017-05-17) =========================================== Features: * Add per user rate-limiting overrides (PR #2208) * Add config option to limit maximum number of events requested by ``/sync`` and ``/messages`` (PR #2221) Thanks to @psaavedra! Changes: * Various small performance fixes (PR #2201, #2202, #2224, #2226, #2227, #2228, #2229) * Update username availability checker API (PR #2209, #2213) * When purging, don't de-delta state groups we're about to delete (PR #2214) * Documentation to check synapse version (PR #2215) Thanks to @hamber-dick! * Add an index to event_search to speed up purge history API (PR #2218) Bug fixes: * Fix API to allow clients to upload one-time-keys with new sigs (PR #2206)