Correct paths reported so they are relative to the reported location of the package

fixes #1932
remove duplicate 'if cr == (0, 0):' in get_terminal_size
minor fixes to changelog
Raise NotImplementedError (not NotImplemented)

NotImplemented is a singleton intended for use in __eq__ methods where comparison is not possible for some reason.
merge
Merge pull request #1933 from r1chardj0n3s/wheel-file-list

Wheel file list