FIX: random_start feature in GaussianProcess
FIX: gp_diabetes_dataset examples (theta_ attribute)
adding avg weights and flag to plain_sgd method
asgd is added
adding test that computes the average sgd
checkpoint for classifier
fixing tests
adding documentation fixes and changing avg to average
fixing documentation
adding comments to linear algebra operations
updating doc
more documentation changes
FIX numerically unstable test_logistic.py
DOC fix references to moved examples
TST: Fix warnings in np 1.9

These break our tests
Changed _partition_estimators  signature to make it compatible with warm start.
Added warm start to random forests.
DOC whats_new.rst entry for warm_start forests
adding test that contains a simple asgd implementation and compares it with the output of sgd_fast
adding more precision to almost equal