root/pypi: links for collab-hub

root/pypi collab_hub-0.4.0.tar.gz
root/pypi collab_hub-0.4.0-py3-none-any.whl
root/pypi collab_hub-0.2.0.tar.gz
root/pypi collab_hub-0.2.0-py3-none-any.whl