cargo: bump mdbook from 0.4.52 to 0.5.2

[dependabot]

Bumps mdbook from 0.4.52 to 0.5.2.

Release notes

Sourced from mdbook's releases.

v0.5.2

See https://github.com/rust-lang/mdBook/blob/master/CHANGELOG.md#mdbook-052 for a complete list of changes.

v0.5.1

See https://github.com/rust-lang/mdBook/blob/master/CHANGELOG.md#mdbook-051 for a complete list of changes.

v0.5.0

The 0.5.0 release is the next major release of mdBook, containing over 130 PRs since 0.4.52! The primary focus for this release has been an evolution of the Rust APIs to make it easier to maintain, to evolve in a backwards-compatible fashion, to clean up some things that have accumulated over time, and to significantly improve the performance and compile-times.

This release also includes many new features described in the CHANGELOG.

We have prepared a 0.5 Migration Guide to help existing authors switch from 0.4.

v0.5.0-beta.2

See https://github.com/rust-lang/mdBook/blob/master/CHANGELOG.md#mdbook-050-beta2 for a complete list of changes.

v0.5.0-beta.1

See https://github.com/rust-lang/mdBook/blob/master/CHANGELOG.md#mdbook-050-beta1 for a complete list of changes.

v0.5.0-alpha.1

See https://github.com/rust-lang/mdBook/blob/master/CHANGELOG.md#mdbook-050-alpha1 for a complete list of changes.

Changelog

Sourced from mdbook's changelog.

mdBook 0.5.2

v0.5.1...v0.5.2

Changed

• Updated Rust crate html5ever to 0.36.0. #2970
• Updated cargo dependencies. #2969

Fixed

• Fixed repeated error message when HTML config is invalid in mdbook serve. #2983
• Fixed sidebar scroll position when heading nav is involved. #2982
• Fixed color for rustdoc error messages. #2981
• Fixed usage of custom preprocessors with MDBook::test. #2980

mdBook 0.5.1

v0.5.0...v0.5.1

Changed

• Changed the scrollbar background to be transparent. #2932
• Ignore invalid top-level environment variable config keys. This allows setting things like MDBOOK_VERSION to not cause an error. #2952

Fixed

• Fixed the sidebar heading nav to have the correct nesting levels. #2953
• Various Font Awesome fixes and improvements. #2951

mdBook 0.5.0

v0.4.52...v0.5.0

The 0.5.0 release is the next major release of mdBook, containing over 130 PRs since 0.4.52! The primary focus for this release has been an evolution of the Rust APIs to make it easier to maintain, to evolve in a backwards-compatible fashion, to clean up some things that have accumulated over time, and to significantly improve the performance and compile-times.

This release also includes many new features described below.

We have prepared a 0.5 Migration Guide to help existing authors switch from 0.4.

The final 0.5.0 release only contains the following changes since 0.5.0-beta.2:

• Added error handling to environment config handling. This checks that environment variables starting with MDBOOK_ are correctly specified instead of silently ignoring. This also fixed being able to replace entire top-level tables like MDBOOK_OUTPUT. #2942

... (truncated)

Commits

• 7b29f8a Merge pull request #2985 from ehuss/bump-version
• 94569a4 Update to 0.5.2
• 9774762 Merge pull request #2983 from ehuss/serve-bad-html-config
• 723d9df serve: Fix repeated error message when HTML config is invalid
• 45e2158 Merge pull request #2982 from ehuss/fix-sidebar-scroll
• 59017ea Fix sidebar scroll position when heading nav is involved
• f857ab2 Merge pull request #2981 from ehuss/fix-rustdoc-color
• 938a912 Merge pull request #2980 from ehuss/fix-test-preprocessor
• 23724b0 Fix color for rustdoc error messages
• 7bdea7c Don't rebuild preprocessor map during test
• Additional commits viewable in compare view

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