Update sphinx to 3.0.0

[pyup-bot]

This PR updates Sphinx from 2.4.4 to 3.0.0.

Changelog

3.0.0

* 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* 7401: Incorrect argument is passed for :event:`env-get-outdated` handlers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

3.0.0b1

* C++, fix cross reference lookup in certain cases involving
function overloads.
* 5078: C++, fix cross reference lookup when a directive contains multiple
declarations.
* C++, suppress warnings for directly dependent typenames in cross references
generated automatically in signatures.
* 5637: autodoc: Incorrect handling of nested class names on show-inheritance
* 7267: autodoc: error message for invalid directive options has wrong location
* 7329: autodoc: info-field-list is wrongly generated from type hints into the
class description even if ``autoclass_content='class'`` set
* 7331: autodoc: a cython-function is not recognized as a function
* 5637: inheritance_diagram: Incorrect handling of nested class names
* 7139: ``code-block:: guess`` does not work
* 7325: html: source_suffix containing dot leads to wrong source link
* 7357: html: Resizing SVG image fails with ValueError
* 7278: html search: Fix use of ``html_file_suffix`` instead of
``html_link_suffix`` in search results
* 7297: html theme: ``bizstyle`` does not support ``sidebarwidth``
* 3842: singlehtml: Path to images broken when master doc is not in source root
* 7179: std domain: Fix whitespaces are suppressed on referring GenericObject
* 7289: console: use bright colors instead of bold
* 1539: C, parse array types.
* 2377: C, parse function pointers even in complex types.
* 7345: sphinx-build: Sphinx crashes if output directory exists as a file
* 7290: sphinx-build: Ignore bdb.BdbQuit when handling exceptions
* 6240: napoleon: Attributes and Methods sections ignore :noindex: option

Links

• PyPI: https://pypi.org/project/sphinx
• Changelog: https://pyup.io/changelogs/sphinx/
• Homepage: http://sphinx-doc.org/