Update docutils to 0.14

[pyup-bot]

There's a new version of docutils available.
You are currently using 0.13.1. I have updated it to 0.14

These links might come in handy: PyPI | Changelog | Homepage | Bugtracker

Changelog

0.14

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

As rc2.

• docutils/docs/ref/docutils.dtd:

• Enable validation of Docutils XML documents against the DTD:

• docutils/parsers/rst/:

• Added functionality: escaped whitespace in URI contexts.
• Consistent handling of all whitespace characters in inline markup
  recognition. (May break documents that relied on some whitespace
  characters (NBSP, ...) not to be recognized as whitespace.)

• docutils/utils/smartquotes.py:

• Update quote definitions for et, fi, fr, ro, sv, tr, uk.
• Add quote definitions for hr, hsb, hu, lv, sh, sl, sr.
• Differentiate apostrophe from closing single quote (if possible).
• Add command line interface for stand-alone use (requires 2.7).

• docutils/writers/_html_base:

• Provide default title in metadata.
• The MathJax CDN shut down on April 30, 2017. For security reasons, we
  don't use a third party public installation as default but warn
  if math-output is set to MathJax without specifying a URL.
  See math-output_ for details.

• docutils/writers/html4css1:

• Respect automatic table column sizing.

• docutils/writers/latex2e/init.py

• Handle class arguments for block-level elements by wrapping them
  in a "DUclass" environment. This replaces the special handling for
  "epigraph" and "topic" elements.

• docutils/writers/odf_odt:

• Language option sets ODF document's default language
• Image width, scale, ... set image size in generated ODF.

• tools/

• New front-end rst2html4.py.

Got merge conflicts? Close this PR and delete the branch. I'll create a new PR for you.

Happy merging! 🤖