Organic: update artwork, add harmonic knobs to control harmonic of each oscillator
Organic: fix detuning
The detuning scale was incorrectly calculated: instead of measuring in cents as it claims to, it was actually
in 1/100th octaves, so I fixed it so that I set the units to actual cents (1/100 seminote). Then I set the
range to +/-1200 cents and added compat code so that old values get multiplied by 12, to maintain backwards compat.
Merge pull request #659 from diizy/organic

Organic: update artwork, add harmonic knobs to control harmonic of each ...