Incorrect NoteOff after changing octaves

[eclab]

1. Hold down a key (say, "q") to play a note. A NOTE ON is signaled to begin playing that note.

2. While holding down the key, press the RIGHT ARROW to shift up an octave.

3. Let go of the ("q") key. The wrong NOTE OFF is signaled: it's the one to stop playing the note up one octave. The note is now permanently stuck on.

This works with left arrow too of course.

[flit]

Thanks for the bug report! I have some time coming up next month when I should be able to work on this.

[gsxdsm]

I was able to fix this. WIll submit a PR soon.