0.12 release

Wed Feb 24 16:57:44 EST 2016

Hi StÃ©fan,

> #1937 highlights a bug in our tests (and failing tests, that aren't
> currently showing up), so I would consider that the last blocker.

> I'll try to get around to #1905, but if I don't that's also OK.

OK ! For #1937, I think the bug highlighted by
test_orb.test_keypoints_orb_desired_no_of_keypoints should be fixed
before the PR can be merged. Otherwise we'll have Travis failing all the
time, for all new PRs. Am I wrong?

And many thanks for all the explanations! 

Cheers,
Emma