ENH less nested code
Remove a couple more 'using a non-integer number instead of an integer DeprecationWarning'
Make everything accept lists as input.
Merge pull request #3430 from amueller/test_list_input

[MRG] Test list input
Merge pull request #3433 from lesteve/remove-non-integer-deprecation-warnings

[MRG] Get rid of "DeprecationWarning: using a non-integer number instead of an integer" when running the tests
ENH: add a median absolute deviation metric
DOC: add an example of robust fitting

This compares RANSAC and ThielSen
Added a parameter check on n_estimators in BaseEnsemble to raise error if it is not strictly positive.
ENH better default for test for SelectKBest and random projection
MAINT tree compute feature_importance by default
ENH Make all decision functions have the same shape. Fixes SVC and GradientBoosting. Closes #1490.
pep8
Merge pull request #3439 from arjoly/test-commons

[MRG] Simplify test commons
FIX encoding issue
Merge pull request #2804 from arjoly/lrap

[MRG+1] Label ranking average precision
DOC update what's new
TST: fix doctest
MAINT deprecate fit_ovr, fit_ovo, fit_ecoc, predict_ovr, predict_ovo, predict_ecoc and predict_proba_ovr
DOC: better documentation for robust models
API: naming: CamelCase class -> camel_case function