request: update midiPolyphony into... midiPolyUnison?

[mcraze]

So here's the request:

The ability to send each next note (in a chord too) to each next 2 channels (instead of one) with the custom (user-set) pitch detuning for each channel.

Essentially this will create a 2 voices unison per note effect when used with several hardware synths or with a "guitar mode" in synths like Matrix 1000.

The option to also set the output to 3 channels per note would be cool too.