root/pypi: links for briefcase-p4a-backend

root/pypi briefcase_p4a_backend-1.0.0.post1.tar.gz
root/pypi briefcase_p4a_backend-1.0.0.post1-py3-none-any.whl
root/pypi briefcase_p4a_backend-1.0.0.tar.gz
root/pypi briefcase_p4a_backend-1.0.0-py3-none-any.whl