REL: 0.12.1 Bugfix release

Debian release 0.12.0-1

ENH more robust transformer testing.... don't ask why that came up

COSMIT pep8

Debian release 0.11.0-2

Debian release 0.11.0-1

DOC: updated testing instructions

RELEASE 0.11

FIX testing: random state problem in forest testing.

Debian release 0.10.0-1