• revamp of Settings
  • migrated away from SharedPreferences
  • all app settings properties are migrated, synchronization settings are reset
  • old Preferences can temporarily be exported/imported
  • Settings are done in MainActivity, removed PreferenceActivity
• revamp of the players
  • both audio and video are now handled in AVPlayer screen (the original AudioPlayer)
  • VideoPlayerActivity is removed
• some screens' background color is corrected
• skipped some older DB migration steps, some of which might cause crash
• some code refactoring and reorganization