1. Long overdue: Multiple level undos

2. When switching from an EV style to a swing style, melody and solo tracks will be automagically updated to swing 8th notes.

I always find it tedious to transcribe a song with complex structure from paper into biab. 2 main issues: (1) the bar numbering on paper doesn't match biab's. (2) cut-and-pasting bars within biab too manual, too error prone. So, it will be very handy if:

3. On the top of biab's internal numbering, biab allows me to label the bars with my own numbering.

4. Drag-and-drop to cut-and-paste bars.

Thanks.