Update sphinx to 2.0.1

[pyup-bot]

This PR updates Sphinx from 1.8.4 to 2.0.1.

Changelog

2.0.1

==============================

Dependencies
------------

Incompatible changes
--------------------

Deprecated
----------

Features added
--------------

Bugs fixed
----------

* LaTeX: some system labels are not translated
* RemovedInSphinx30Warning is marked as pending
* deprecation warnings are not emitted

- sphinx.application.CONFIG_FILENAME
- sphinx.builders.htmlhelp
- :confval:`viewcode_import`

* 6208: C++, properly parse full xrefs that happen to have a short xref as prefix.
* 6220, 6225: napoleon: AttributeError is raised for raised section having
references
* 6245: circular import error on importing SerializingHTMLBuilder
* 6243: LaTeX: 'releasename' setting for latex_elements is ignored
* 6244: html: Search function is broken with 3rd party themes
* 6263: html: HTML5Translator crashed with invalid field node
* 6262: html theme: The style of field lists has changed in bizstyle theme

Testing
--------

2.0.0

* 6196: py domain: unexpected prefix is generated

Testing
--------

2.0.0b2

* Add a helper function: ``sphinx.testing.restructuredtext.parse()``

2.0.0b1

* Stop to use ``SPHINX_TEST_TEMPDIR`` envvar

1.8.5

=====================================

Bugs fixed
----------

* LaTeX: Remove extraneous space after author names on PDF title page (refs: 6004)
* 6026: LaTeX: A cross reference to definition list does not work
* 6046: LaTeX: ``TypeError`` is raised when invalid latex_elements given
* 6067: LaTeX: images having a target are concatenated to next line
* 6067: LaTeX: images having a target are not aligned even if specified
* 6149: LaTeX: ``:index:`` role in titles causes ``Use of \icentercr doesn't
match its definition`` error on latexpdf build
* 6019: imgconverter: Including multipage PDF fails
* 6047: autodoc: ``autofunction`` emits a warning for method objects
* 6028: graphviz: Ensure the graphviz filenames are reproducible
* 6068: doctest: ``skipif`` option may remove the code block from documentation
* 6136: ``:name:`` option for ``math`` directive causes a crash
* 6139: intersphinx: ValueError on failure reporting
* 6135: changes: Fix UnboundLocalError when any module found
* 3859: manpage: code-block captions are not displayed correctly

Links

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

[pyup-bot]

Closing this in favor of #34