Change to modify display on OPZ to reflect current track being recorded

[blee430]

You can add this into the "setSolo" method to make the OPZ change its display so that it reflects the track that is currently being recorded.

msg2 = mido.Message('control_change', control= 102, channel= 0, value= chn+1)
self.outport.send(msg2)

I also have gotten the code working so that it will export all 8 tracks, up to 8 measures, separately for each pattern up to 16 patterns. I can send the code if you would like. It sort of makes a mess of things, but works for my purposes.