ReConverge: fix buggy getRegionsOfInterest
SideBySide: fix buggy getRegionsOfInterest
CopyRectangle: better getRegionsOfInterest
Crop: fix buggy getRegionsOfInterest
Roto: doesn’t need getRegionsOfInterest
TrackerPM: doesn’t need getRegionsOfInterest
Fix wrong comments about getRegionsOfInterest
ofxsTracking: supported bit depth really depends on the algorithm!