loongson/pypi: links for singularsuperletpy

loongson/mirror SingularSuperletPY-0.4.tar.gz
loongson/mirror SingularSuperletPY-0.3.tar.gz
loongson/mirror SingularSuperletPY-0.2.tar.gz
loongson/mirror SingularSuperletPY-0.1.tar.gz