loongson/mirror: links for grapevine-mcmc

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