root/pypi: links for swivel

root/pypi swivel-2.2.0.tar.gz
root/pypi swivel-2.2.0-py3-none-any.whl
root/pypi swivel-2.1.0.tar.gz
root/pypi swivel-2.1.0-py3-none-any.whl
root/pypi swivel-0.1.0.tar.gz
root/pypi swivel-0.1.0-py3-none-any.whl