Fix as_float_array behaviour when copy=True
Add test of the as_float_array behaviour when copy=True
Add a copy parameter to safe_asarray()
Imp readability
ENH: improve ICA memory profile by 40%
pep8
better coverage
fix doctest
ENH : use warning instead of print
update what's new
Merge pull request #2212 from dengemann/ica_memory

WIP/ENH: improve ICA memory profile by 40%
DOC/FIX affinity_propagation damping default value.
Merge pull request #2213 from cmd-ntrf/master

DOC/FIX affinity_propagation damping default value.
FIX missing class attribute in ICA. Common test was failing
DOC: some documentation for the Tree Cython structure
FIX: fastica function dictionary default value
DOC copyedit RBM docstrings

Removed the fake LaTeX; it wasn't showing up on the website
and it looks bad in IPython.
Merge pull request #2216 from glouppe/tree-doc

[MRG] Additional documentation for the Tree cython structure.
Deprecate FastICA.sources_
Rename LabelBinarizer.multilabel to .multilabel_ + DOC