Branching 0.15.X to prepare the 0.15.0b1 release
Minor fixes in the docs
Fix some fun column span alignment errors.
removed unused variables and imports, add used imports where missing.
COSMIT TYPO
Stop using some deprecated interfaces.
Merge pull request #3263 from amueller/minor_fixes_for_release

MRG Minor fixes for release
DOC: remove broken example link
MAINT removed shadowed broken test
TST reduce max_depth for numerical stability
Merge branch '0.15.X' of github.com:scikit-learn/scikit-learn into 0.15.X
DOC add Data Publica testimonial