FIX: random_start feature in GaussianProcess
FIX: gp_diabetes_dataset examples (theta_ attribute)
ENH: Return attribute n_iter_ for linear models dependent on the enet solver
TST: Added test to check that warm model converges faster than a cold one
TST: Better to test that warm_start runs only once after the prev model has converged
TST: Added test to check that higher alpha converges faster
Added return_n_iter parameter for enet (and lasso) path
[DOC] minor fixes
MAINT typo in Makefile
ENH allow y to be a list in GridSearchCV, cross_val_score and train_test_split.
add test for safe_indexing, add another test for cross_val_score
FIX: Fit the data in tests
Merge pull request #3349 from MechCoder/return_niter

[MRG+1] Return attribute n_iter_ for linear models dependent on the enet solver
scorer: add sample_weight support
BUG: Support array interface
Catch ConvergenceWarning in RandomizedL1
ENH improve forest testing + avoid *args
ENH improve rand_int and rand_uniform
ENH rename parameters in MockListClassifiers.
TST non-regression test for CV on text pipelines