Add tests to check PyPolyNode.Contour
Add tests to check PyPolyNode.Contour

anthrotype/pyclipper,anthrotype/pyclipper,greginvm/pyclipper,greginvm/pyclipper,JesseCrocker/pyclipper,anthrotype/pyclipper,JesseCrocker/pyclipper,greginvm/pyclipper