loongson/pypi: links for crumb-py

loongson/mirror crumb.py-0.5.tar.gz
loongson/mirror crumb.py-0.4.tar.gz
loongson/mirror crumb.py-0.3.tar.gz
loongson/mirror crumb.py-0.2.tar.gz
loongson/mirror crumb.py-0.1.tar.gz