Docstring improvements.  In particular, added docstrings for the standalone wrap() and fill() functions.  This should address the misunderstanding that led to SF bug 577106.
Docstring improvements.  In particular, added docstrings for the
standalone wrap() and fill() functions.  This should address the
misunderstanding that led to SF bug 577106.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator