[Cython] Preparations for Cython 0.26.1 and 0.27

[Stefan Behnel]

Robert Bradshaw schrieb am 25.08.2017 um 17:43:
> On Thu, Aug 17, 2017 at 5:18 AM, Stefan Behnel wrote:
>> I think we're ready for a release candidate
>> then, or is there anything still open?
> 
> Any updates on this?

Sorry, was heavily occupied with fixing things up for the next major
release. Tons of good stuff in there already...

I'll prepare a release candidate.

Stefan