root/pypi: links for python-singleton-plugin

root/pypi python_singleton_plugin-0.0.2.tar.gz
root/pypi python_singleton_plugin-0.0.2-py3-none-any.whl
root/pypi python_singleton_plugin-0.0.1.tar.gz
root/pypi python_singleton_plugin-0.0.1-py3-none-any.whl