memoize svg diagram
use TYPE_BYTE_INDEXED for images (to save memory!)
new icons
util/button-label
send label when firing button label fn
use button-label in edit_note
split button-label into configure-button-label
set background when button label is clicked
less/more buttons for track options
smaller less/more icons
better phrase partitioning
version 1.0.4 -> 3.0.0