loongson/pypi: links for opportini-pdfbuilder

loongson/mirror opportini_pdfbuilder-0.3.1.tar.gz
loongson/mirror opportini_pdfbuilder-0.3.0.tar.gz
loongson/mirror opportini_pdfbuilder-0.2.0.tar.gz
loongson/mirror opportini_pdfbuilder-0.1.0.tar.gz