root/pypi: links for ser2tcp

root/pypi ser2tcp-2.3.0.tar.gz
root/pypi ser2tcp-2.3.0-py3-none-any.whl
root/pypi ser2tcp-2.2.0.tar.gz
root/pypi ser2tcp-2.2.0-py3-none-any.whl
root/pypi ser2tcp-2.1.0.tar.gz
root/pypi ser2tcp-2.1.0-py3-none-any.whl