Bump ex_doc from 0.18.4 to 0.19.1

[dependabot-preview]

Bumps ex_doc from 0.18.4 to 0.19.1.

Changelog

Sourced from ex_doc's changelog.

v0.19.1

• Enhancements
  • Update CSS styles
  • Remove sourcemaps from package

v0.19.0

This release requires Elixir v1.7 and later. For earlier Elixir versions, use ExDoc ~> 0.18.0.

• Enhancements

  • Do not select "iex>" when selecting code samples
  • Use makeup to perform ELixir's syntax highlighting (other languages still use highlight.js)
  • Use `[rel="noopener"] on external links
  • Link directly to page if sidebar item has no subitems
  • Autolink Kernel and Kernel functions and special forms with shorthands (for example, only is_atom/1 is necessary)
  • Trim EEx contents to reduce HTML size
  • Allow apps to be excluded from umbrella app docs

• Bug fixes

  • Exclude types with [**typedoc**](https://github.com/typedoc) false from the docs
  • Make sure autolink considers the longest matching dependency name in case of shared prefixes

v0.18.3

• Bug fix
  • Fix formatting of typespecs causing errors
  • Update jQuery
  • Properly remove underscore from typespec links

v0.18.2

• Enhancements
  • Improve documentation pages for printing
  • Autolink Kernel, Kernel.SpecialForms, and built-in types
  • Annotate opaque types
  • Add vertical-align:top to tables
  • Allow module-function-arity references in links, for example: some code
  • Remove underscore from view source link
  • Run code formatter on typespecs (if one is available)
  • Make night mode switch link more obvious

v0.18.1

• Bug fixes
  • Include missing formatter files

v0.18.0

• Enhancements

... (truncated)

Commits

• d54ea33 Release v0.19.1
• f58869c Update README.md
• 7144c62 No longer write sourcemaps since in dev we don't minify
• f7860bc Remove --debug flag
• b9ff990 Only include .map files in dev builds
• ed7d7e4 Format codebase and check formatting on CI (#880)
• df3f15f Update travis
• 1f8aeee Use latest .css versions
• 0f5c27a Add mix build instead of overriding mix docs
• 299ab6a Release v0.19.0
• Additional commits viewable in compare view

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[coveralls]

Pull Request Test Coverage Report for Build 32

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 3 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-1.05%) to 79.371%

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Files with Coverage Reduction	New Missed Lines	%
lib/minecraft/connection.ex	3	84.44%

Totals
Change from base Build 24:	-1.05%
Covered Lines:	227
Relevant Lines:	286

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💛 - Coveralls