root/pypi: links for cusum

root/pypi cusum-0.2.2.tar.gz
root/pypi cusum-0.2.1.tar.gz
root/pypi cusum-0.1.20.tar.gz
root/pypi cusum-0.1.19.tar.gz
root/pypi cusum-0.1.18.tar.gz
root/pypi cusum-0.1.2.tar.gz
root/pypi cusum-0.1.1.tar.gz