troscianko/BehaveAI: v1.4.0

Addition of orientation measurement - uses YOLO OBBs, but also uses secondary classifiers to work out the actual orientation of the animal/object. So this comes with all the annotation tools to specify angle and draw OBBs. Also some Kalman tracker updates, making it slightly better at dealing with cross-over events, and scales the metrics to be relative to bounding box size (rather than absolute pixel scales). Which makes it more robust against objects of different sizes/distances.