Added
* `kwimage.draw_text_on_image` now support `halign`
* `kwimage.Boxes.draw_on` now supports different colors for each box.
Changed
* Removed explicit Python 3.5 support. Note, 3.5 should still still work using
the universal `py2.py3-none-any` wheel.
Fixed
* Issue with `Detections.from_coco` with keypoint categories
* Fixed `kwimage.Boxes.draw_on` when images are non-contiguous