Attempting to get an onset detector doing something
Learned that onset detector ugens only work well for musical signals.

Built a simple amplitude follower and got the result piping back to the
language.
Merge remote-tracking branch 'origin/master' into onsetdetection
OK I think I know what I will do now.
Now using Color class for organ tubes which helps with HSV conversion
Incorporated luke's changes.  Smoothing out visualizer data.