root/pypi: links for slip

root/pypi SLIP-20240420.tar.gz
root/pypi SLIP-20191113.tar.gz
root/pypi SLIP-20171205-py3-none-any.whl
root/pypi SLIP-0.3.8.tar.gz
root/pypi SLIP-0.2.tar.gz
root/pypi SLIP-0.1.tar.gz