COSMIT reorganized functions in the module
DOC : add doctring in plot_lasso_and_elasticnet.py
DOC: adding Bishop as ref for ARD
Merge pull request #1530 from agramfort/doc_lasso

Doc lasso + ARD
COSMIT simplify unique_labels in sklearn.metrics
Added code to address issue #1403
X is not a constructor parameter.
Add missing types to docstring.
In preprocessing.binarize, eliminate zeros from sparse matrices
Added feature for issue #1527
Minor PEP8 fixes for issue #1527
Minor docstring fix for issue #1527
Added tests and docs for normalized zero_one loss
Fixed pep8 spacing issue and floating point doctest issue
Checkout files from ndawe:treeweights
FIX: roll back some changes
FIX: what's new
flake8
sampling w/ replacement via sample_weights
ENH: early binding + allocate features at tree creation (by @pprett)