[Cython] Cython 0.20 beta 2

[Robert Bradshaw]

On Sun, Jan 12, 2014 at 12:20 AM, Stefan Behnel <stefan_ml at behnel.de> wrote:
> Robert Bradshaw, 12.01.2014 08:53:
>> There was a lot of bugfixes and other good stuff on master, so I
>> pulled it in and am releasing another beta. You can find it at
>> http://cython.org/release/Cython-0.20b2.tar.gz . I don't anticipate
>> merging master again before the release, so this is nearly a release
>> candidate, but please let us know if you run into any regressions.
>
> The only thing that is still a bit unclear to me is whether calling
> object.__new__() from extension types was a good idea:
>
> https://github.com/cython/cython/commit/ddaffbe78c06e580ca0d9cd334c7a28a4de5c40b
>
> It means that we are now running a couple of safety checks inside of
> CPython on object instantiation that validate the arguments being passed
> into __init__() and __new__(), because object() doesn't expect any.
>
> http://thread.gmane.org/gmane.comp.python.cython.user/10267/focus=10519
>
> If we want to play safe for the release, we could restrict this change only
> to abstract classes for now (for which we know that CPython will generate
> an error). That was the original intention of the change anyway.

Yes, I'm going to "play it safe" and include the restrict-to-abstract change.