gituser/pypi: links for pipeproxy

gituser/pypi pipeproxy-0.7.tar.gz
gituser/pypi pipeproxy-0.7-py2.py3-none-any.whl
gituser/pypi pipeproxy-0.5.tar.gz
gituser/pypi pipeproxy-0.5-py2.py3-none-any.whl