loongson/pypi: links for bitrab

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