Log Message:
py-py3c: updated to 1.3

v1.3

Compatibility:
Tested with Python 3.9.0

Additions:
To help avoid compiler warning about uninitialized members, extra members are \ 
added to the PyModuleDef structure for Python 2: m_slots, m_traverse, m_clear \ 
and m_free. Under Python 2, they must be set to NULL (usually by continuing to \ 
leave them out).