New release: Air v0.14.0

Air is a new private messenger based on the Messaging Layer Security (MLS) protocol. Invite-only for now.

✨️ New features:

- Get invitation codes in the app and invite your friends.
- Fast scrolling to the first message and back to the end
- Design changes in the composer area

🛠️ Fixes:

- Better animations for new messages
- The UI sometimes froze
- Which message was last read was not always right
- Improvements to message processing stability
- Android push notifications are now more stable
- Better UI scaling (esp. on linux)
- Performance improvements
- Various minor fixes