Invert check for type in scale_from_clipper and scale_to_clipper
Invert check for type in scale_from_clipper and scale_to_clipper

Check if the object is a collection first using __len__, otherwise
assume the object is numeric.
greginvm/pyclipper,greginvm/pyclipper,anthrotype/pyclipper,anthrotype/pyclipper,anthrotype/pyclipper,greginvm/pyclipper