root/pypi: links for cgc

root/pypi cgc-1.5.0.tar.gz
root/pypi cgc-1.5.0-py3-none-any.whl
root/pypi cgc-1.4.0.tar.gz
root/pypi cgc-1.4.0-py3-none-any.whl
root/pypi cgc-1.3.1.tar.gz