Adding covariance regularization to QDA
Update qda.py
Update qda.py
Missed a space!
Updating to ensure pep8 compliaance
reg_param is a float
Update qda.py
Update test_qda.py
Update qda.py
Merge pull request #2142 from sergeyf/master

 Adding covariance regularization to QDA
DOC fix small mistakes
DOC fixed some formatting in kernel approximation
DOC fixed some formatting in the multiclass module
Merge pull request #2145 from NelleV/kCCA

Minor numpydoc reformatting
clearer decision surface plots and classifier final predictions for the ensembles
Donate buttons added `About us` and front page
improved formatting
COSMIT pep8
ENH order *does* matter for sparse matrices
donations paragraphs added