root/pypi: links for graphgym

root/pypi graphgym-0.4.0.tar.gz
root/pypi graphgym-0.4.0-py3-none-any.whl
root/pypi graphgym-0.3.1.tar.gz
root/pypi graphgym-0.3.1-py3-none-any.whl
root/pypi graphgym-0.3.0.tar.gz
root/pypi graphgym-0.3.0-py3-none-any.whl