root/pypi: links for singletonize

root/pypi singletonize-1.1.2.tar.gz
root/pypi singletonize-1.1.2-py3-none-any.whl
root/pypi singletonize-1.1.1.tar.gz
root/pypi singletonize-1.1.1-py3-none-any.whl