loongson/pypi: links for pythontree

loongson/mirror pythontree-1.5.5.tar.gz
loongson/mirror pythontree-1.5.3.tar.gz
loongson/mirror pythontree-1.5.tar.gz
loongson/mirror pythontree-1.4.5.tar.gz
loongson/mirror pythontree-1.4.tar.gz
loongson/mirror pythontree-1.3.3.tar.gz
loongson/mirror pythontree-1.3.2.tar.gz