root/pypi: links for ser2sock

root/pypi ser2sock-4.1.2.tar.gz
root/pypi ser2sock-4.1.1.tar.gz
root/pypi ser2sock-4.1.0.tar.gz
root/pypi ser2sock-3.0.0.tar.gz
root/pypi ser2sock-2.0.0.tar.gz