Mismatch of capitalisation of 'Clamp' with the spec

[nick-shaw]

CLF/python/aces/clf/Range.py

Line 110 in 47ba8be

clamp = (self._attributes['style'] == 'clamp')

The style is given as 'Clamp' in S-2014-006, but in this implementation 'clamp' with no capital is used.