fix reformat keeping consecutive dedent tokens on one line
dont block comment delimeters as indenting/dedenting

and dont handle space in block comments specially
dont change the indent of block comments

only the last line, if it only contains space, if allowed to align with the indent of the line the block comment starts.
dont show musicxml export in regular releases

the musicxml export is not yet usable enough
add musicxml export to the ly command
upd chlog
chlog typo
add a way to get a binary output file
make ly musicxml work in both python 2 and python 3
start work on ly.music

this will become the basis under musicxml export and midi play from cursor etc etc
oops
wip reading items
support q, generic MusicItem
highlight music items (note, rest, etc) simpler
wip music items
support reading from specified source
wip duration computation
ly.duration.compute() works
new functions in ly.duration

they can return base duration and scaling separately (but also multiplied together)
add_duration function