loongson/mirror: links for beatboard

loongson/mirror beatboard-0.1.2.tar.gz
loongson/mirror beatboard-0.1.2-py3-none-any.whl
loongson/mirror beatboard-0.1.1.post3.tar.gz
loongson/mirror beatboard-0.1.1.post3-py3-none-any.whl
loongson/mirror beatboard-0.1.1.post2.tar.gz
loongson/mirror beatboard-0.1.1.post2-py3-none-any.whl
loongson/mirror beatboard-0.1.0.post5.tar.gz
loongson/mirror beatboard-0.1.0.post5-py3-none-any.whl