example title change
gallery effects,icon change,cleanups
typo fix and heading changes
fix indentation error-cause lots of build warnings
4 thumbs per row/hover effect/some cleanup
fix for iris dataset
line_count sort added, some changes reverted
move comment out of list
remove comment, undo change
rename example title
PY3 fix metaclasses. See #1829.
Merge pull request #1836 from kmike/master

Fix ABCMeta under Python 3.x
get rid of ``rho`` in sgd documentation - has been replaced by ``l1_ratio``
Cosmit: more idiomatic way of clipping to zero.

The test also runs 300 milliseconds faster on my machine (1.3s instead
of 1.6).
Demystify magic values in NNLS implementation.
BUG: fix replacement for _neg.
Fix random state where appropriate.
Fixx doctest.
DOC: document attributes fitted by DictVectorizer.
COSMIT various typofixes

As suggested by codespell <https://github.com/lucasdemarchi/codespell>

Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>