loongson/pypi: links for pubmed-api

loongson/mirror pubmed_api-2.1.3.tar.gz
loongson/mirror pubmed_api-2.1.2.tar.gz
loongson/mirror pubmed_api-2.1.1.tar.gz
loongson/mirror pubmed_api-2.1.0.tar.gz
loongson/mirror pubmed_api-2.0.0.tar.gz
loongson/mirror pubmed_api-2.0.0-py3-none-any.whl