ran of/scripts/dev/style/styleAddon
Moved global variables/callbacks into ofxONI1_5 as static members.
Removed dependence on XML file.

Will remove commented out code when the segfault is fixed.
Removed threading for now, as it was only waiting for new frames.
Formatting: draw...() functions to oneliners in header.
rewrote calculateMaps into updateDepth, updateColor, updateUserTracker.

Also, fixed bug where colorized image was not allocated as 3-channel