Fixes
- Fix the visibility of the "Repeat missed alarms" setting;
- Fix the "Main features" link in About;
Improvements
General
- Improve backup and restore functionality:
- Ensure alarms can still be restored from older backups;
- Add header metadata to the backup file including package identifier, version name, internal version number and backup timestamp;
Alarm
- Add a single "Dismiss" button if there is no alarm snooze;
- Restore the "undo" text when an alarm is deleted;