* TST enable to run common test on stacking and voting estimators
* revert config changes
* revert unecessary change in _testing
* TST remove check_estimator from local files
* PEP8
* normalize_components in sparsePCA
* changed default strategy of Dummy to prior and removed outputs_2d ttribute
* removed usage of None to drop estimator in ensemble and behaviour param of IsolationForest
* remove support for drop=None in Voting
* removed some warning decorators
* remove feature_extraction.extract_patches
* removed VectorizerMixin and copy parameter from TFIDFVectorizer
* kernel.set_params now raises attributeerror
* removed fig from plot_partial_dependence
* removed iid parameter of search estimators
* removed brier_scorer
* raise error in split when shuffle is False and random_state is not None
* removed MultiOutputEstimator
* removed base classes of NaiveBayes
* removed drop from pipeline
* removed utils in random_projection
* removed presort and classes_ in trees
* flake8
* fixed some tests
* flake
* fixed docstring
* fixed other one
* some left
* mmmm
* MAINT add base class for voting and stacking
* iter
* iter
* PEP8
* support None and drop
* DEPR deprecate None to drop estimator in ensemble
* Add whats new
* remove parameters from base class
* TST add tests to check that we raise warning
* udpate whats new
* iter
* iter
* address nicolas comments
* iter
* review roman comments
* Update sklearn/ensemble/_base.py
Co-Authored-By: Adrin Jalali <adrin.jalali@gmail.com>
* address thomas comment
* Apply suggestions from code review
Co-Authored-By: Nicolas Hug <contact@nicolas-hug.com>
* address comment nicolas
* fix regressor
* TST run test for meta-estimator having estimators keyword
* TST check the target when classifying
* raise warning for 2d array in regression
* always convert to 2D array before average
* DOC add whats new
* iter
* iter
* address comments Nicolas
* iter
* remove parameter for VotingClassifier
* move tests into ensemble voting
* PEP8
Guillaume Lemaitre