loongson/pypi: links for simplebst

loongson/mirror simplebst-0.4.1.tar.gz
loongson/mirror simplebst-0.4.0.tar.gz
loongson/mirror simplebst-0.3.0.tar.gz
loongson/mirror simplebst-0.2.0.tar.gz
loongson/mirror simplebst-0.1.0.tar.gz