…not provided (scikit-learn#7301)

* fix min_weight_fraction_leaf when sample_weights is None

* fix flake8 error

* remove added newline and unnecessary assignment

* remove max bc it's implemented in cython and add interaction test

* edit weight calculation formula and add test to check equality

* remove test that sees if two parameter build the same tree

* reword min_weight_fraction_leaf docstring

* clarify uniform weight in forest docstrings

* update docstrings for all classes

* add what's new entry

* move whatsnew entry to bug fixes and explain previous behavior

# Conflicts:
#	doc/whats_new.rst

Not to use hasattr.

* Link to SAG paper updated

link to SAG paper in `References` section updated (scikit-learn#7512).

* Link to SAG paper updated

dead link of SAG paper in Logistic Regression user guide updated.
resolves scikit-learn#7512

* SAG paper cited in docstring

SAG paper cited in `Reference` section of docstring(scikit-learn#7512).

* minor edits to multiclass documentation

* minor text formatting and language modifications

* minor word changes, sentence clarifications

* attempt to fix ci test

* restored previous paragraph

* minor grammatical correction

* minor grammar fixes

…-learn#7397)

…-learn#7535)

add missing ' in RandomizedSearchCV docs

…rn#7571)

Fix for proper rendering

# Conflicts:
#	doc/whats_new.rst

…g for labels. (scikit-learn#7315)

* refer users to the other encoders to do one hot encoding for labels.

* added to the 'see more' for labelbinarizer, multilabelbinarizer, and labelencoder' as well as an example to multilabel binarizer

* added note about y labels to the OneHotEncoder docstring

* removed example from MultiLabelBinarizer

* documentation should specify LabelBinarizer, not MultiLabelBinarizer in OHE

Run test if dataset has already been downloaded rather than always skipping it

…ikit-learn#7560)

* Fixed search not expanding page

* Changed the comment to warn users why not to leave fixed height on header

…ikit-learn#7330)

* fix batch

* add test for eval_MSE

…earn#7541)

…t_predict (scikit-learn#7585)

* BUGFIX Calling fit_transform instead of transform in Pipeline's fit_predict (scikit-learn#7558)

* PEP8 fixes in test_fit_predict_on_pipeline

* Added comment explaining separate estimators for pipeline in test_fit_predict_on_pipeline

…earn#7519)

* DOC add info to conventions for multi-label fitting

* DOC move to multilabel section and small edits

* DOC clean multilabel examples and clean information

* DOC fix line lengths for multiclass

…r testing since the nose project web site suggests new projects should consider using Nose2, or py.test?

…earn#6282)

…ering (scikit-learn#7814)

…tting (scikit-learn#7593)

* mini-batch can now contain less number of classes than actual data

* added tests where mini batches doesn't contain all classes

…ape` is `'ovr'` (scikit-learn#7724)

* Fix funding and website.

* Update images and fix typos.

* Fix images problem.

…CV (scikit-learn#7799)

* label binarizer not used consistently in CalibratedClassifierCV

* changed position of classes argument to make old tests run

* moved parameter to constructor and added test

* added test where train set doesnt have all classes

* CalibratedClassifierCV can now handle cases where train set doesnt contain all labels

* fixing flake error

* fixing line lengths

* removing np.full()

* from __future__ import division for py2.7

* change is test file

* added an extra test and removed a test with Ridge

* stronger test

* whats new entry

* DOC adding :user: role to whats_new

* DOC correcting the improper username

* DOC adding exceptions for ImportError in sphinx_issues.py

* DOC added import for split_explicit_title

* DOC reverting to the old format for core devs

* DOC reverting changes for more users

* DOC removing extra lines and blank lines

* DOC Adding missing link target for user

* DOC fixing more links

* DOC adding missing links for new contributions

* DOC adding space before brackets in the user links

* DOC reverting a wrong change

* DOC adding final changes

…sionTreeClassifier and DecisionTreeRegressor (scikit-learn#7824)

* DOC adding separate fit() functions

* DOC adding keywords to arguments of super()

* DOC removing trailing whitespaces

* DOC specifying the type of class labels

* DOC removing docstring from BaseDecisionTree.fit

* Fixed cloning ``estimator`` again when calling fit a second time in SelectFromModel

* fix link in whatsnew

…cikit-learn#5874)

* TST if LogisticRegressionCV handles string labels properly
* TST Add a test with class_weight dict
* ENH Encode y and class_weight dict
* Better variable names
* TYPO casses --> classes
* FIX Use dict comprehension; classes_labels --> classes
* Revert dict comprehension (for Python 2.6 compat)
* MNT reorder validation to improve clarity
* Add whatsnew entry

# Conflicts:
#	doc/whats_new.rst

…ion objects (scikit-learn#7680)

…cikit-learn#7553)

* Add test for __dict__ for estimator checks

  check that "predict", "transform", "decision_function" or
"predict_proba" methods do not change the state of __dict__ of any
estimator

  see scikit-learn#7297

* Add a test to test_check_estimator

  that shows that check_estimator fails on an estimator that violates this

* Fixed bug where NMF's n_iter_ attribute was set by calls to transform

…rant cv" PR.