root/pypi: links for singhtools

root/pypi singhtools-0.1.2a0.tar.gz
root/pypi singhtools-0.1.2a0-py3-none-any.whl
root/pypi singhtools-0.1.1a0.tar.gz
root/pypi singhtools-0.1.1a0-py3-none-any.whl