(Contributed by Google, :issue:`3959`.)
+* The :mod:`nntplib` module now supports IPv6.
+
+ (Contributed by Derek Morr; :issue:`1664`.)
Optimizations
=============
(Contributed by Mark Dickinson; :issue:`4910`.)
+* Added :ctype:`PyCapsule` as a replacement for the :ctype:`PyCObject` API.
+ The principal difference is that the new type has a well defined interface
+ for passing typing safety information and a less complicated signature
+ for calling a destructor.
+
+ The old type had a problematic API and is now deprecated. To ease
+ transitioning code, the new type was implemented as a subtype of
+ :ctype:`PyCObject` API.
+
+ (Contributed by Larry Hastings; :issue:`5630`.)
+
Porting to Python 3.1
=====================