root/pypi: links for penknife

root/pypi penknife-2021.5.15.tar.gz
root/pypi penknife-2021.5.15-py3-none-any.whl
root/pypi penknife-2021.5.9.tar.gz
root/pypi penknife-2021.5.9-py3-none-any.whl
root/pypi penknife-2021.5.4.tar.gz
root/pypi penknife-2021.5.4-py3-none-any.whl