loongson/pypi: links for emtrees

loongson/mirror emtrees-0.2.5.tar.gz
loongson/mirror emtrees-0.2.4.tar.gz
loongson/mirror emtrees-0.2.3.tar.gz
loongson/mirror emtrees-0.2.1.tar.gz
loongson/mirror emtrees-0.2.0.tar.gz