vgdev/stable: links for caching-s3-proxy

root/pypi caching-s3-proxy-0.7.tar.gz
root/pypi caching-s3-proxy-0.6.tar.gz
root/pypi caching-s3-proxy-0.5.tar.gz
root/pypi caching-s3-proxy-0.4.tar.gz
root/pypi caching-s3-proxy-0.2.tar.gz
root/pypi caching-s3-proxy-0.1.tar.gz