root/pypi: links for stacked-generalization

root/pypi stacked_generalization-0.0.6-py3-none-any.whl
root/pypi stacked_generalization-0.0.5-py3-none-any.whl
root/pypi stacked_generalization-0.0.4.zip
root/pypi stacked_generalization-0.0.3.zip