loongson/pypi: links for modeltissueflow

loongson/mirror modelTissueFlow-3.1.tar.gz
loongson/mirror modelTissueFlow-3.0.tar.gz
loongson/mirror modelTissueFlow-2.0.tar.gz
loongson/mirror modelTissueFlow-1.8.tar.gz
loongson/mirror modelTissueFlow-1.2.tar.gz