loongson/pypi: links for nalibs-exam

loongson/mirror nalibs-exam-0.2.0.tar.gz
loongson/mirror nalibs_exam-0.2.0-py3-none-any.whl
loongson/mirror nalibs_exam-0.1.0.tar.gz
loongson/mirror nalibs_exam-0.1.0-py3-none-any.whl
loongson/mirror nalibs_exam-0.0.1.tar.gz
loongson/mirror nalibs_exam-0.0.1-py3-none-any.whl