loongson/pypi: links for einsumt

loongson/mirror einsumt-0.9.4.tar.gz
loongson/mirror einsumt-0.9.4-py3-none-any.whl
loongson/mirror einsumt-0.9.3.tar.gz
loongson/mirror einsumt-0.9.2.tar.gz
loongson/mirror einsumt-0.9.1.tar.gz
loongson/mirror einsumt-0.9.0.tar.gz