root/pypi: links for safersympify

root/pypi safersympify-0.1.18.tar.gz
root/pypi safersympify-0.1.11.tar.gz
root/pypi safersympify-0.1.10.tar.gz
root/pypi safersympify-0.1.9.tar.gz
root/pypi safersympify-0.1.8.tar.gz