root/pypi: links for if-optional

root/pypi if_optional-0.0.3.tar.gz
root/pypi if_optional-0.0.3-py3-none-any.whl
root/pypi if_optional-0.0.2.tar.gz
root/pypi if_optional-0.0.2-py3-none-any.whl
root/pypi if_optional-0.0.1.tar.gz
root/pypi if_optional-0.0.1-py3-none-any.whl