root/pypi: links for errfriendly

root/pypi errfriendly-0.2.0.tar.gz
root/pypi errfriendly-0.2.0-py3-none-any.whl
root/pypi errfriendly-0.1.0.tar.gz
root/pypi errfriendly-0.1.0-py3-none-any.whl