loongson/mirror: links for heidelberg-subtyping

loongson/mirror heidelberg-subtyping-0.5.0.tar.gz
loongson/mirror heidelberg-subtyping-0.4.0.tar.gz
loongson/mirror heidelberg-subtyping-0.3.0.tar.gz
loongson/mirror heidelberg-subtyping-0.2.0.tar.gz
loongson/mirror heidelberg-subtyping-0.1.2.tar.gz