Update sphinx to 1.7.2

[pyup-bot]

This PR updates sphinx from 1.7.1 to 1.7.2.

Changelog

1.7.2

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

Incompatible changes
--------------------
* 4520: apidoc: folders with an empty __init__.py are no longer excluded from
TOC

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

* 4669: sphinx.build_main and sphinx.make_main throw NameError
* 4685: autosummary emits meaningless warnings
* autodoc: crashed when invalid options given
* pydomain: always strip parenthesis if empty (refs: 1042)
* 4689: autosummary: unexpectedly strips docstrings containing "i.e."
* 4701: viewcode: Misplaced ``<div>`` in viewcode html output
* 4444: Don't require numfig to use :numref: on sections
* 4727: Option clash for package textcomp
* 4725: Sphinx does not work with python 3.5.0 and 3.5.1
* 4716: Generation PDF file with TexLive on Windows, file not found error
* 4574: vertical space before equation in latex
* 4720: message when an image is mismatched for builder is not clear
* 4655, 4684: Incomplete localization strings in Polish and Chinese
* 2286: Sphinx crashes when error is happens in rendering HTML pages
* 4688: Error to download remote images having long URL
* 4754: sphinx/pycode/__init__.py raises AttributeError
* 1435: qthelp builder should htmlescape keywords
* epub: Fix docTitle elements of toc.ncx is not escaped
* 4520: apidoc: Subpackage not in toc (introduced in 1.6.6) now fixed

Links

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

[pyup-bot]

Closing this in favor of #120