Fix for playback problems in Android 12+

Fixes a bug where the keyboard wouldn't show up if the app had been launched from portrait mode on an iPad.

Synchronized section switching
Support for transposing instruments
Live preview of styles and tracks
Fix for saving keys with song/section

Minor bugfixes

New layout and workflow, diatonic chord guide, drag-and-drop reordering of chords and sections, full undo/redo support.

The lite version now has all the features and content from the latest full version (see full description).

Support for repeated sections (verse, chorus, etc) and background playback.

Added a row selector for easier navigation. Fixed copy/paste bug. A few new styles.