root/pypi: links for gtfs2nx

root/pypi gtfs2nx-0.2.1.tar.gz
root/pypi gtfs2nx-0.2.1-py3-none-any.whl
root/pypi gtfs2nx-0.2.0.tar.gz
root/pypi gtfs2nx-0.2.0-py3-none-any.whl