DOC fix references to moved examples
TST: Fix warnings in np 1.9

These break our tests
Changed _partition_estimators  signature to make it compatible with warm start.
Added warm start to random forests.
DOC whats_new.rst entry for warm_start forests
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
DOC fix formatting of attributes etc. in docstrings
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
COSMIT smipler & more robust check in test_kfold_valueerrors

Using assert_warn_message internally cleans the warning
registries making this test more robust to changes in other tests.
DOC fix see also references