Return tune object on renderABC so that it can be manipulated further.
Reformat.
Implement function that will hide measures after they are played.
Implement function that will hide measures after they are played.
Make the highlighting of notes more flexible: can pass in a class and/or a color.
Keep a copy of the engraver with the final tune so that it can be parsed later.
Keep a copy of the engraver with the final tune so that it can be parsed later.
Animation of music. With the timing.
Fix the way the measure numbers are calculated.
Fix calculating the length of a measure.