Fixed poly scaling (preserves aspect ratio)
Increased history of DDR, slows down display
Ableton numclips() returns -1 if clip count not known

Handle this return value too.
Added PApplet arg to stop(), start()
Added Visualizer.initializeContext()
Better handling of no people by VisualizerPS
Made Minim a subclass of Grid
Added mono FFT rendering
Use start/stop in rendered instead of reset/setup

Move some initialization to draw()
Do minim initialization once
Added Menu SVG's
Use notes symbol for icon in Poly
Improved vibrating lines for Voronoi and guitar
Use smaller circles for guitar icon
Increased size of guitar
Set minimum velocity for guitar notes
Put icons in front of people in DDR instead of directly below
Improved soccer ball outline
Added SVG for notes for poly
Add drawLaserPerson() to visualizer renderers