loongson/pypi: links for symbolic-learn

loongson/mirror symbolic-learn-0.1.4.tar.gz
loongson/mirror symbolic-learn-0.1.3.tar.gz
loongson/mirror symbolic-learn-0.1.2.tar.gz
loongson/mirror symbolic-learn-0.1.1.tar.gz
loongson/mirror symbolic-learn-0.1.0.tar.gz