jp4/cu102: links for xar

root/pypi xar-20.12.2.tar.gz
root/pypi xar-20.12.2-py2.py3-none-any.whl
root/pypi xar-19.4.22.tar.gz
root/pypi xar-19.4.22-py2.py3-none-any.whl
root/pypi xar-18.7.12.tar.gz
root/pypi xar-18.7.12-py2.py3-none-any.whl