root/pypi: links for nester2020

root/pypi nester2020-1.4.0.tar.gz
root/pypi nester2020-1.3.0.tar.gz
root/pypi nester2020-1.2.0.tar.gz
root/pypi nester2020-1.1.0.tar.gz
root/pypi nester2020-1.0.0.tar.gz