nuwa/stage: links for readtheyaml

root/pypi readtheyaml-2.2.1.tar.gz
root/pypi readtheyaml-2.2.1-py3-none-any.whl
root/pypi readtheyaml-2.2.0.tar.gz
root/pypi readtheyaml-2.2.0-py3-none-any.whl
root/pypi readtheyaml-2.1.0.tar.gz
root/pypi readtheyaml-2.1.0-py3-none-any.whl
root/pypi readtheyaml-1.9.0.tar.gz
root/pypi readtheyaml-1.9.0-py3-none-any.whl