loongson/pypi: links for discus

loongson/mirror Discus-0.1.3b0.tar.gz
loongson/mirror Discus-0.1.3b0-py2.py3-none-any.whl
loongson/mirror Discus-0.1.2b0.tar.gz
loongson/mirror Discus-0.1.1b0.tar.gz