FIX issue #1457 KNeighbors should test that n_samples > 0
ENH : add reconstruction_err_ for NMF with sparse input
BUG move label_ from BaseLibSVM to BaseSVC

Currently, SVR has a label_ that raises an AttributeError because
of missing classes_.

Also corrected the deprecation warning which calls it labels_.
COSMIT decouple regression and classification in SVMs
use scipy.linalg in test_nmf.py
adding comment on why sparse frobenius is ok as done
DOC: typo in warning

Thanks for alexsavio for reporting
remove the equaldistance code warning, replace with doc warnings
typo fix
remove warning
warning removal
update warning box
deprecation warnings, indent fix
andys suggestions and test
COSMIT remove unused imports, pep8
BUG allow outlier_label=0 in RadiusNeighborClassifier

Fixes #1602.
BUG in RadiusNeighborClassifier outlier handling

Ruggedized the test, which wasn't doing much previously, and added a test
for c0d4015d201b68e5da6afe4c7fb8b0e6819f038c.

Also replaced flatten (which copies) with ravel and improved the error
message for outliers in the face of outlier_label=None.
Merge pull request #1576 from mrorii/fix_kneighbors

FIX issue #1457 KNeighbors should test that n_samples > 0
ENH rewrite radius-NN classifier's outlier handling

Fixes a bug introduced in 2dfe13d0a7c0c482961ad49ae04b89bdc81f9d00.
IMHO, the code is much more readable this way.
WIP: doc hyperlinks, fixed size thumbnails