root/pypi: links for standardjson

root/pypi standardjson-0.3.1.tar.gz
root/pypi standardjson-0.3.1-py2.py3-none-any.whl
root/pypi standardjson-0.3.0.tar.gz
root/pypi standardjson-0.3.0-py2.py3-none-any.whl