Refactor/Rewrite the database system to be based on SQLiteOpenHelper instead of Room, as Room will keep empty columns around even after trying to explicitly delete them.
Use BottomNavigationView as the main navigator of Auxio instead of a ViewPager + BottomNavigationView, primarily to fix some memory leaks and give Auxio a better UI design overall.
Remove MusicRepository/All Library models and replace it with a single shared ViewModel, Move MainFragment into MainActivity, and remove the LoadingFragment -> MainFragment navigation path.
Fix a bug with the permission checking where the MusicRepository would return NO_PERMS to the LoadingFragment faster than the creation of the view, causing the error message to never display. Permission checks are now handled by LoadingFragment instead.
