Log Message:
py-ipython: updated to 7.28.0

IPython 7.28 is again a minor release that mostly bring bugfixes, and couple of
improvement. Many thanks to MrMino, who again did all the work this month, and
made a number of documentation improvements.

Here is a non-exhaustive list of changes,

Fixes:

 - async with doesn't allow newlines :ghpull:`13090`
 - Dynamically changing to vi mode via %config magic) :ghpull:`13091`

Virtualenv handling fixes:

 - init_virtualenv now uses Pathlib :ghpull:`12548`
 - Fix Improper path comparison of virtualenv directories :ghpull:`13140`
 - Fix virtual environment user warning for lower case pathes :ghpull:`13094`
 - Adapt to all sorts of drive names for cygwin :ghpull:`13153`

New Features:

 - enable autoplay in embed YouTube player :ghpull:`13133`

 Documentation:

 - Fix formatting for the core.interactiveshell documentation :ghpull:`13118`
 - Fix broken ipyparallel's refs :ghpull:`13138`
 - Improve formatting of %time documentation :ghpull:`13125`
 - Reword the YouTubeVideo autoplay WN :ghpull:`13147`