DOC fixed problem in citations in spectral_embedding
COSMIT typos
ENH don't use deprecated class_prior fit parameter for NB in test
ENH in spectral_embedding: do input validation before anything else
TST in testing deprecated load_filenames catch deprecation warning
TST catch expected warning in sparse coordinate descent test.
remove 1000`s of warnings from example
Merge pull request #1592 from jaquesgrobler/master

Remove warnings from example
P3K: division should produce integer.

Division using / produces a float under Python 3.x; it leads to
DeprecationWarnings because these float "n_features" makes "starts"
array float and values from "starts" are used as slice indices.
P3K: Fixed print related Python3 errors
P3K: avoid iteritems / itervalues when feasible
P3K: decode error message in svm wrapper
DOC : missing alpha doc in LassoLars
DOC cosmit fix column span alignment errors.
FIX example uses old parameter name
COMPatibility more careful deprecation of mode and k in SpectralClustering
COMP more careful deprecation of seed in SGDClassifier
COMP add deprecated property rho to ElasticNet
COMP keep seed as init parameter of Perceptron, only deprecate
COMP add deprecated ``labels_`` property to LinearSVC