[Om-synth] note allocation again

[Atte André Jensen]

Hi Dave

Have you looked into the note allocation scheme we discussed some time 
ago? Would it be possible to have a selection of the various scemes? If 
not (and no one objects) would it be possible the change the default 
scheme to "latest note".

Dunno how you would implement this, but it would work like a stack:
* Pressing a note puts it on the stack
* Releasing a note removes it from the stack (not necessarily the top one)
* The frequency is always determined by the note at the top of the stack
* If stack has notes, gate is high. If stack is empty, gate is low.

--
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 : :' :  Atte
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