root/pypi: links for web-retriever

root/pypi web-retriever-0.3.0.tar.gz
root/pypi web_retriever-0.3.0-py3-none-any.whl
root/pypi web-retriever-0.2.0.tar.gz
root/pypi web_retriever-0.2.0-py3-none-any.whl