loongson/mirror: links for rdf12conv

loongson/mirror rdf12conv-0.3.0.tar.gz
loongson/mirror rdf12conv-0.3.0-py3-none-any.whl
loongson/mirror rdf12conv-0.2.0.tar.gz
loongson/mirror rdf12conv-0.2.0-py3-none-any.whl
loongson/mirror rdf12conv-0.1.0.tar.gz
loongson/mirror rdf12conv-0.1.0-py3-none-any.whl