loongson/pypi: links for pysideextn

loongson/mirror pysideextn-2.0.2.tar.gz
loongson/mirror PySideExtn-2.0.2-py3-none-any.whl
loongson/mirror PySideExtn-2.0.1.tar.gz
loongson/mirror PySideExtn-2.0.1-py3-none-any.whl
loongson/mirror PySideExtn-2.0.0-py3-none-any.whl