Bump sphinx from 2.4.1 to 3.0.3

[dependabot-preview]

Bumps sphinx from 2.4.1 to 3.0.3.

Changelog

Sourced from sphinx's changelog.

Release 3.0.3 (in development)

Dependencies

Incompatible changes

Deprecated

Features added

Bugs fixed

Testing

Release 3.0.2 (released Apr 19, 2020)

Features added

• C, parse attributes and add :confval:c_id_attributes and :confval:c_paren_attributes to support user-defined attributes.

Bugs fixed

• #7461: py domain: fails with IndexError for empty tuple in type annotation
• #7510: py domain: keyword-only arguments are documented as having a default of None
• #7418: std domain: :rst:role:term role could not match case-insensitively
• #7461: autodoc: empty tuple in type annotation is not shown correctly
• #7479: autodoc: Sphinx builds has been slower since 3.0.0 on mocking
• C++, fix spacing issue in east-const declarations.
• #7414: LaTeX: Xindy language options were incorrect
• sphinx crashes with ImportError on python3.5.1

Release 3.0.1 (released Apr 11, 2020)

Incompatible changes

• #7418: std domain: :rst:dir:term role becomes case sensitive

... (truncated)

Commits

• 241be80 Bump to 3.0.3 final
• 49e7118 Merge pull request #7556 from jakobandersen/c_array_declarator
• 082bf7d C, parse all types of array declarators
• 31a34c2 Update CHANGES for PR #7156
• a65db71 Merge pull request #7520 from a-recknagel/3.0.x
• 84413ed fix for #7516
• d08d4de Bump version
• 2458dd3 Bump to 3.0.2 final
• bf4d3da Merge pull request #7511 from tk0miya/7510_kwonlyarg_None
• b2140c8 Fix #7510: py domain: keyword-only arguments are wrongly rendered
• Additional commits viewable in compare view

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[coveralls]

Coverage remained the same at 42.065% when pulling 41cf0c1 on dependabot/pip/sphinx-3.0.3 into 10a4d82 on master.

[dependabot-preview]

Superseded by #422.