you can add percussion notes now. And they play from the beginning.

Doesn't work when highlighted a note yet. It will fuck up. But you can
add a percussion note by just doing addNote(note, true); no percussion
note by addNote(note). Percussion note can be any note but for now it
will default to the midi of the synth drum for middle c and will be
displayed in the middle of the bottom clef
Merge branch 'master' of https://github.com/bradkaiser/composer

Conflicts:
	js/BarManager.js
	js/note.js