riego/dev: links for pygcd

root/pypi pygcd-0.3.1.post1-py2.py3-none-any.whl
root/pypi pygcd-0.3.1-py2.py3-none-any.whl
root/pypi pygcd-0.3.post1-py2.py3-none-any.whl
root/pypi pygcd-0.3-py2.py3-none-any.whl