root/pypi: links for send-s3

root/pypi send_s3-3.1.0.tar.gz
root/pypi send_s3-3.1.0-py3-none-any.whl
root/pypi send_s3-3.0.0.tar.gz
root/pypi send_s3-3.0.0-py3-none-any.whl