Beta 5

I would recommend using Beta 4 unless you want to test the post processing effects. This is because there are still some issues with the Post Processing effects (see issue 19 linked below).

This release adds experimental support for effects, using ofxPostProcessing. It adds three new keywords to the language, mapped to 3 of ofxPostProcessing's effects, Kaleidoscope, NoiseWarp and Pixelate.
More information on development of post processing effects in this issue:
#19