From the release notes:
* Switched from /r0 to /v3 paths everywhere.
* The new v3 paths are implemented since Synapse 1.48,
Dendrite 0.6.5, and Conduit 0.4.0. Servers older than
these are no longer supported.
* Added new deferred backfill system to allow backfilling
historical messages later instead of doing everything at login.
* Added option to automatically request old media from phone after
backfilling.
* Added experimental provisioning API to check if a phone number
is registered on WhatsApp.
* Added automatic retrying if the websocket dies while sending a
message.
* Added experimental support for sending status broadcast messages.
* Added command to change disappearing message timer in chats.
* Improved error handling if Postgres dies while the bridge is running.
* Fixed bridging stickers sent from WhatsApp web.
* Fixed registration generation not regex-escaping user ID namespaces.
Diff from Hukadan, OK Renaud Allard (MAINTAINER). Thanks!
0728ce6175