loongson/pypi: links for poisson-binomial

loongson/mirror poisson_binomial-0.0.2.tar.gz
loongson/mirror poisson_binomial-0.0.2-py3-none-any.whl
loongson/mirror poisson_binomial-0.0.1.tar.gz
loongson/mirror poisson_binomial-0.0.1-py3-none-any.whl