Bump sphinx from 1.8.1 to 2.0.0

[dependabot-preview]

Bumps sphinx from 1.8.1 to 2.0.0.

Changelog

Sourced from sphinx's changelog.

Release 2.0.0 (released Mar 29, 2019)

Dependencies

2.0.0b1

• LaTeX builder now depends on TeX Live 2015 or above.

• LaTeX builder (with 'pdflatex' :confval:latex_engine) will process
  Unicode Greek letters in text (not in math mark-up) via the text font and
  will not escape them to math mark-up. See the discussion of the
  'fontenc' key of :confval:latex_elements; such (optional) support for
  Greek adds, for example on Ubuntu xenial, the texlive-lang-greek and (if
  default font set-up is not modified) cm-super(-minimal) as additional
  Sphinx LaTeX requirements.

• LaTeX builder with :confval:latex_engine set to 'xelatex' or to
  'lualatex' requires (by default) the FreeFont fonts,
  which in Ubuntu xenial are provided by package fonts-freefont-otf, and
  e.g. in Fedora 29 via package texlive-gnu-freefont.

• requests 2.5.0 or above

• The six package is no longer a dependency

• The sphinxcontrib-websupport package is no longer a dependency

• Some packages are separated to sub packages:

  • sphinxcontrib.applehelp
  • sphinxcontrib.devhelp
  • sphinxcontrib.htmlhelp
  • sphinxcontrib.jsmath
  • sphinxcontrib.serializinghtml
  • sphinxcontrib.qthelp

Incompatible changes

2.0.0b1

• Drop python 2.7 and 3.4 support
• Drop docutils 0.11 support
• Drop features and APIs deprecated in 1.7.x
• The default setting for :confval:master_doc is changed to 'index' which
  has been longly used as default of sphinx-quickstart.
• LaTeX: Move message resources to sphinxmessage.sty
• LaTeX: Stop using \captions<lang> macro for some labels
• LaTeX: for 'xelatex' and 'lualatex', use the FreeFont OpenType
  fonts as default choice (refs: #5645)
• LaTeX: 'xelatex' and 'lualatex' now use \small in code-blocks
  (due to FreeMono character width) like 'pdflatex' already did (due
  to Courier character width). You may need to adjust this via
  :confval:latex_elements 'fvset' key, in case of usage of some other

... (truncated)

Commits

• 3711c47 Bump to 2.0.0 final
• e02af7f Update message catalogs
• 60e2e89 Merge CHANGES entries
• e1185ff Merge pull request #6198 from tk0miya/6196_unexpected_prefix
• 700be75 Fix #6196: py domain: unexpected prefix is generated
• 8980f63 Add testcase for sphinx.domains.python
• 98e4767 Merge pull request #6195 from tk0miya/update_changes
• 2c75d27 Add an incompatible change entry (refs: #6186)
• b96a315 Bump version
• 987cf55 Bump to 2.0.0 beta2
• Additional commits viewable in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot merge will merge this PR after your CI passes on it
• @dependabot squash and merge will squash and merge this PR after your CI passes on it
• @dependabot cancel merge will cancel a previously requested merge and block automerging
• @dependabot reopen will reopen this PR if it is closed
• @dependabot ignore this [patch|minor|major] version will close this PR and stop Dependabot creating any more for this minor/major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)
• @dependabot use these labels will set the current labels as the default for future PRs for this repo and language
• @dependabot use these reviewers will set the current reviewers as the default for future PRs for this repo and language
• @dependabot use these assignees will set the current assignees as the default for future PRs for this repo and language
• @dependabot use this milestone will set the current milestone as the default for future PRs for this repo and language
• @dependabot badge me will comment on this PR with code to add a "Dependabot enabled" badge to your readme

Additionally, you can set the following in your Dependabot dashboard:

• Update frequency (including time of day and day of week)
• Automerge options (never/patch/minor, and dev/runtime dependencies)
• Pull request limits (per update run and/or open at any time)
• Out-of-range updates (receive only lockfile updates, if desired)
• Security updates (receive only security updates, if desired)

Finally, you can contact us by mentioning @dependabot.

[dependabot-preview]

Superseded by #106.