* :func:`dict` now uses a "compact" representation `pioneered by PyPy
<https://morepypy.blogspot.com/2015/01/faster-more-memory-efficient-and-more.html>`_.
:pep:`468` (Preserving the order of ``**kwargs`` in a function.) is
- implemented by this. (Contributed by INADA Naoki in :issue:`27350`.)
+ implemented by this. (Contributed by INADA Naoki in :issue:`27350`. Idea
+ `originally suggested by Raymond Hettinger
+ <https://mail.python.org/pipermail/python-dev/2012-December/123028.html>`_.)
* Long sequences of repeated traceback lines are now abbreviated as
``"[Previous line repeated {count} more times]"`` (see