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
Merge remote-tracking branch 'upstream/master'