* 7364: autosummary: crashed when :confval:`autosummary_generate` is ``False``
* 7370: autosummary: raises UnboundLocalError when unknown module given
* 7367: C++, alternate operator spellings are now supported.
* C, alternate operator spellings are now supported.
* 7368: C++, comma operator in expressions, pack expansion in template
argument lists, and more comprehensive error messages in some cases.
* C, C++, fix crash and wrong duplicate warnings related to anon symbols.
* 6477: Escape first "!" in a cross reference linking no longer possible
* 7219: py domain: The index entry generated by ``py:function`` directive is
different with one from ``index`` directive with "builtin" type
* 7301: capital characters are not allowed for node_id
* 7301: epub: duplicated node_ids are generated
* 6564: html: a width of table was ignored on HTML builder
* 7401: Incorrect argument is passed for :event:`env-get-outdated` handlers
* 7355: autodoc: a signature of cython-function is not recognized well
* 7222: autodoc: ``__wrapped__`` functions are not documented correctly
* 7409: intersphinx: ValueError is raised when an extension sets up
:confval:`intersphinx_mapping` on :event:`config-inited` event
* 7343: Sphinx builds has been slower since 2.4.0 on debug mode