stash
Fixed scale to approximate 'bounce'
Merge branch 'master' into feature-tint-shader
changed program index of tint shader
Fixed display.
Now, build shaders upon request.
Tint code in place, but doesn't work
Added initial tint filter + touch handling.
added Math class for common math conversions and functions
Changed max scale to 2.0
Added Invert filter and shaders
Changed setCurrentFilter so that the current filter stays applied after editing is done.
Fixed reset: so that it now resets the shader program as well.