pMix / int.lib

Great to see this - I did something similar for iPad and a number of hardware synths: https://www.youtube.com/watch?v=-XbnLtwxB_c

I've got quite a lot of additional logic though, so it's not simply interpolating parameters but also allows a bit more control, for example mapping pitch to octaves or octaves+fifths etc., restricting oscillator types, filter modes, FX types etc.

I also added options for extrapolation and randomising, so you can go beyond the range of "average" parameters.