root/pypi: links for postcash

root/pypi postcash-0.1.1.tar.gz
root/pypi postcash-0.1.1-py3-none-any.whl
root/pypi postcash-0.1.0rc2.tar.gz
root/pypi postcash-0.1.0rc2-py2.py3-none-any.whl
root/pypi postcash-0.1.0rc1.tar.gz
root/pypi postcash-0.1.0rc1-py2.py3-none-any.whl