root/pypi: links for heprefs

root/pypi heprefs-0.1.5.tar.gz
root/pypi heprefs-0.1.5-py2.py3-none-any.whl
root/pypi heprefs-0.1.4.tar.gz
root/pypi heprefs-0.1.4-py2.py3-none-any.whl