v1.3.2

What's Changed

• Added background masking functionality as described in README here
• Code fixes in response to deprecation of np.float in numpy
• Exposed max_iou_distance as an argument in deep_sort_realtime.deepsort_tracker.DeepSort object
• Exposed gating_only_position as an argument in deep_sort_realtime.deep_sort.tracker.Tracker (if flagged True, during gating, only x y position is taken into account, instead of the usual x, y, aspect ratio and height)
• Minor fixes and README updates