loongson/pypi: links for nbgrader-unittest-sebastian-stigler

loongson/mirror nbgrader_unittest_sebastian_stigler-0.0.3.tar.gz
loongson/mirror nbgrader_unittest_sebastian_stigler-0.0.3-py3-none-any.whl
loongson/mirror nbgrader_unittest_sebastian_stigler-0.0.2.tar.gz
loongson/mirror nbgrader_unittest_sebastian_stigler-0.0.2-py3-none-any.whl