0.12 release

[Stéfan van der Walt]

On 2 March 2016 at 13:24, Emmanuelle Gouillart
<emmanuelle.gouillart at nsup.org> wrote:
>> #1937 highlights a bug in our tests (and failing tests, that aren't
>> currently showing up), so I would consider that the last blocker.

#1937 is a bug fix, so should be merged.  The real problem is the bug
that it exposes, which is

https://github.com/scikit-image/scikit-image/issues/1935

I will work on fixing it this afternoon.

Stéfan