DOC mistake in comment

Didn't re-run Cython as this won't change line numbers etc.
Modified the confusion matrix example: included a normalized matrix, changed the colors and added class labels.
Merge pull request #3454 from ldirer/confusion_matrix_example

[MRG] Modified the confusion matrix example
DOC fix doc errors in utils.testing
TST stabilize check_transformer_n_iter
Typo

"In particularly" -> "In particular,"
FIX revert changes introduced by mistake in previous commit

If the dataset is too small, stratified k-fold CV used
internally by some classifiers such as LogisticRegressionCV
raises a warning.
Merge pull request #3492 from furukama/patch-2

Typo
MAINT: Effectively remove deprecated parameters
DOC fix styling of See Also sections
DOC fix styling of method signatures
DOC: added Machinalis testimonial
Support unseen labels LabelBinarizer and test (Backward compatibablity)
Correct the handling of unseen label with varying arangments
pep8 update
Remove debugging print statements
Optimize loops over labels

Use np.in1d to replace ineffcient list comprehensions
Inserts space around operator
backport numpy 1.8.1 in1d to support 1.6.2