root/pypi: links for footprints

root/pypi footprints-2.0.0.tar.gz
root/pypi footprints-2.0.0-py3-none-any.whl
root/pypi footprints-2.0.0b2.tar.gz
root/pypi footprints-2.0.0b2-py3-none-any.whl
root/pypi footprints-2.0.0b1.tar.gz
root/pypi footprints-2.0.0b1-py3-none-any.whl