New release: Air v0.12.0

✨️ New features:

- The status of the last sent message is now visible in the chat list

🛠️ Fixes:

- Make text selection in composer smoother
- Bring back image preview to mobile clients
- Hide message composer in contact request screen
- Font size now follows the system settings
- Improve right-clicking on test messages
- Increase the back button hit area
- Ignore empty message edits
- Consistent status bar color in light mode