Update what's new for 5.5

docs/source/whatsnew/version5.rst

@@ -15,7 +15,7 b' System Wide config'
 - Startup files can be found in ``/etc/ipython/startup`` or ``{sys.prefix}/etc/ipython/startup``
   in addition to the profile directory, for system-wide or env-specific startup files.
 
-See :gh:`10644`
+See :ghpull:`10644`
 
 ProgressBar
 -----------
@@ -31,7 +31,29 b' IPython now has built-in support for progressbars::'
 
     # progress bar in cell 1 updates.
 
-See :gh:`10755`
+See :ghpull:`10755`
+
+
+Misc
+----
+
+ - Fix ``IPython.core.display:Pretty._repr_pretty_`` had the wrong signature.
+   (:ghpull:`10625`)
+ - :magic:`timeit` now give a correct ``SyntaxError`` if naked ``return`` used.
+   (:ghpull:`10637`)
+ - Prepare the ``:ipython:`` directive to be compatible with Sphinx 1.7.
+   (:ghpull:`10668`)
+ - Make IPython work with OpenSSL in FIPS mode; change hash algorithm of input
+   from md5 to sha1. (:ghpull:`10696`)
+ - Clear breakpoints before running any script with debugger. (:ghpull:`10699`)
+ - Document that :magic:`profile` is deprecated, not to be confused with :magic:`prun`. (:ghpull:`10707`)
+ - Limit default number of returned completions to 500. (:ghpull:`10743`)
+
+You can see all the PR marked for the `5.5. milestone <https://github.com/ipython/ipython/pulls?q=is%3Apr%20milestone%3A5.5%20is%3Aclosed%20NOT%20%22Backport%20PR%22>`_,
+and all the `backport versions <https://github.com/ipython/ipython/pulls?utf8=%E2%9C%93&q=is%3Apr%20milestone%3A5.5%20is%3Aclosed%20%22Backport%20PR%22%20>`_.
+
+
+
 
 
 IPython 5.4