root/pypi: links for ust-download-cache

root/pypi UST Download Cache-2.1.0.tar.gz
root/pypi UST_Download_Cache-2.1.0-py3-none-any.whl
root/pypi UST Download Cache-2.0.0.tar.gz
root/pypi UST_Download_Cache-2.0.0-py3-none-any.whl
root/pypi UST Download Cache-1.1.0.tar.gz
root/pypi UST_Download_Cache-1.1.0-py3-none-any.whl