Modified sparse OvR to handle sparse target data
Progress comment
Introduce multiclass behvior into predict_ovr, minimal testing in test_multiclass
Initialized sparse output in fit_ovr LabelBinarizer to be sparse if Y is sparse, removed debug statements
Enforced correct dtype in predict_ovr
Included first test for sparse ovr
Included first test for sparse ovr
Revised sparse ovr predict test
Implemented construction of csc_matrix by column indicies in predict_ovr
Revised formating and indentations
Revised test_ovr_fit_predict_sparse to ensure identical results from sparsely and densely trained classifiers
Revised predict_ovr to loop over estimators in the multiclass case
Removed blank line