root/pypi: links for crossref-local

root/pypi crossref_local-0.3.1.tar.gz
root/pypi crossref_local-0.3.1-py3-none-any.whl
root/pypi crossref_local-0.3.0.tar.gz
root/pypi crossref_local-0.3.0-py3-none-any.whl