links for MDS
small changes
final changes
pep8
heading change
FIX: amg requires sparse matrices input
missing _set_diag
ENH cleanup tests, lower tolerance
COSMIT pep8
Merge branch 'master' into gbrt-interactions
Update what's new.
Cosmits and typos.
topics -> topic
Merge remote-tracking branch 'upstream/master'
use Agg backend with warn=False for matplotlib enabled tests
check in ``if_matplotlib`` if $DISPLAY set
FIX and test deprecated import of spectral_embedding from cluster
TST better test-coverage in clustering module
COSMIT in cross-validation tests
FIX random state in test by @briancheung. Thanks