loongson/pypi: links for doi2bib

loongson/mirror doi2bib-0.4.0-py3-none-any.whl
loongson/mirror doi2bib-0.4.0-py2-none-any.whl
loongson/mirror doi2bib-0.3.0.tar.gz
loongson/mirror doi2bib-0.2.3.tar.gz
loongson/mirror doi2bib-0.2.2.tar.gz
loongson/mirror doi2bib-0.2.1.tar.gz