loongson/pypi: links for htmltree

loongson/mirror htmltree-0.7.6.tar.gz
loongson/mirror htmltree-0.7.5.tar.gz
loongson/mirror htmltree-0.7.3.tar.gz
loongson/mirror htmltree-0.7.2.tar.gz
loongson/mirror htmltree-0.7.0.tar.gz