adsr sliders
cleanup, started sustain
.gitignore
sustain adjustments
envelope adjustments
envelope adjustments
added low pass filter, cleanup
added peak slider
can change filter params
filter sliders hooked up
switched back to 16bit int audio for oscillator
changed min, max values
started new envelope control
envelope view UI work
envelope min and max set in synthManger
limiting envelope view movement
added envelope view enum for tracking envelope segment
envelope view initial values supplied by data source
graphical envelope generator is working 
minimum attack and decay times