added unit test for null spectrum approximation in quadratic time mmd and a minor spell correction
Refactor MulticlassMultipleOutputLabels
Added back the commented code.
Removed old enumerator
Renamed apply_multiclass_multiple_output to apply_multilabel_output
Renamed python example classifier_multiclassmultipleoutputlinlinear_modular.py
Decision Tree Notebook started
typos fixed, final exercise plot fixed
minor change in last code snippet
data submodule updated
NEWS update
Eigenfaces example with OpenCV
temp save