BUG: fix Py 3
Sample compiler config for windows
Force stdc++ link for the windows build
Regenerate pairwise_fast.pyx with recent cython for windows build

Previous versions of cython had a bad support for atomics under windows
Fix atomics definitions under windows for sklearn._hmm.pyx
typo
Refactor loss_func and score_func warnings in grid_search
Add score_overrides_loss to _deprecate_loss_and_score_funcs
Add deprecation warnings in Ridge
Add deprecation warnings in rfe
Add catching of the deprecation warnings in rfe and ridge tests
Refactor loss_func and score_func warnings in cross_validation + replacement in two examples
Fix 'scoring' docstrings
Imp documentation
Fix tests
Fix grid_search.py example
Fix tests
DOC fixed the optional arguments
Update multiclass/multilabel documentation

Added examples to multiclass/label definitions

Reformulation of multilabel classification definition; updated list of multiclass algorithms

Added pointers for label binarizer helpers

Changed n_labels to n_classes
DOC overall improvements in the multiclass documentation