Got mentions working again
Got typing indicators working again
Got the notification sound and preview preferences working
Fixed a few issues with attachment image loading
Fixed an issue where enum settings weren't getting stored correctly
Fixed a couple of issues around the duplicate messages handling
Fixed a few issues with ClosedGroup polling and ClosedGroup control message handling
Started working through updating the MediaGallery
Added migrations for contacts and started working through thread migration (have contact and closed group threads migrating)
Deprecated usage of ECKeyPair in the migrations (want to be able to remove Curve25519Kit in the future)