COSMIT pep8
COSMIT Typo
Improving code coverage for datasets module. Moved dataset imports inside test_data_home, because it is preferable for import errors to only affect the tests that require those imported methods.  My first commit to scikit. -bcajes
revert to original import placement style
ENH isotonic regression is now slighty more robust to noise
Added test to check whether the isotonic regression changed y when all ranks were equal
Merge pull request #1504 from NelleV/isotonic

ENH isotonic regression is now slighty more robust to noise
Type-os and added great links to learning more about Machine Learning
Feedback from @amueller
Add perceptron loss to plot.
ENH Add support for multioutput metrics
DOC add narrative doc for regression metrics
Update what's new
TST check that ValueError is raised when the number of output differ
ENH add mean absolute error
DOC cosmit alphabet order of classification metric in ref
DOC typo
ENH add multioutput support for dummy estimator
DOC instance attributes + TST: do not record warning
DOC typo