Update plot_svm_regression.py

library imports have been moved to top of the file.
MAINT warn of future behaviour change proposed in #2610
ENH: configure travis to also test old numpy & scipy
DOC: add some header doc to the travis scripts
More informative numerical error message in SGD

Also add a test.
cosmit
DOC: Fixed roc_curve docstring

It does not make sense for y_score of roc_curve to be binary.
Merge pull request #3035 from ogrisel/test-sgd-stability-error

[MRG+1] More informative numerical error message in SGD
Merge pull request #3022 from ogrisel/travis-old-numpy-scipy

[MRG] Set travis to test old versions of numpy and scipy too
MAINT remove _label attribute from SVC.

Fixes #1573.
FIX numerical stability issues on 32 bit platform

The gini index and the mean square error (variance) might differ due
to numerical instability. Since those instabilities mainly occurs at
high tree depth, we restrict the maximal depth.
MAINT lazily import scipy.cluster

Prevents PIL from being dragged along. Fixes #2961.
ENH micro-optimize a few tests
ENH micro-optimize fast MCD

Tests run 10-20% faster, which is what I was aiming for (it takes
almost 5s on my box).
FIX random_state validation on c_step

Got lost in e6003bc89. Also input validation on X.
DOC mention "shape" in AP docs

http://stackoverflow.com/q/22873622/166749
ENH less copying in validation for neighbors
FIX safe_asarray to handle LIL, DOK formats
TST safe_asarray for dok_matrix and lil_matrix
DOC: website: feature selection on front page

Replaces Isomap. Fixes #3033.