Fixed: White block at bottom of conversation panel in iOS theme (#2144 and #2153)
Fixed: Would attempt to rotate signed prekey every five seconds, forever, after app discovers it is unlinked (1c6d91b)
Dev:
- Introduce IndexedDB index on
messages store tracking schemaVersion (#2128)
- Preparation for encrypted backups (cea42bd)
- Updates to structure of exported data - messages.zip, flat list of attachments (6d8f4b7)
