adds audio toggle
removes some shutter sound files
uses camera.isButtonReleased in blankScene in order to start flash
adds multiple scenes to main program, and ability to toggle between them
using camera.isButtonPressed() to beter sync flash to picture
adds workshop image procesing sketch
use 0 to turn audio on and off
deals with some state transition corner cases, like making sure sound is mostly faded before fading picture out
adds function to fade pixels in all fotos, based on pixel locations (not color)
adds pixel fade to all fotos in animation; based on pixel location, not color
Merge remote-tracking branch 'upstream/master'