Changes in synapse v0.17.0-rc4 (2016-08-05) =========================================== Changes: * Change the way we summarize URLs when previewing (PR #973) * Add new ``/state_ids/`` federation API (PR #979) * Speed up processing of ``/state/`` response (PR #986) Bug fixes: * Fix event persistence when event has already been partially persisted (PR #975, #983, #985) * Fix port script to also copy across backfilled events (PR #982)