mdbook 0.2.0

[Havvy]

The books that need to be updated:

• Unstable Book (to be done alongside the final PR)
• Cargo guide
• Reference
• Rust by Example
• Rustc Guide
• Embedded-WG
• WASM-WG

Books that don't need to be updated:

• API Guidelines - No subdirectories or theme
• CLI-WG book - No cross-linking
• Net-WG book - Being rewitten, so can be done as is.

WASM

For the unstable book:

unstable-book/library-features/fn-traits.html:141: broken link - unstable-book/library-features/language-features/unboxed-closures.html
unstable-book/language-features/non-ascii-idents.html:171: broken link - unstable-book/reference/keywords.html
unstable-book/language-features/lang-items.html:308: broken link - unstable-book/language-features/library-features/compiler-builtins-lib.html
unstable-book/language-features/macro-literal-matcher.html:142: broken link - unstable-book/book/first-edition/macros.html
unstable-book/language-features/global-asm.html:199: broken link - unstable-book/language-features/language-features/asm.html
unstable-book/language-features/plugin-registrar.html:142: broken link - unstable-book/language-features/language-features/plugin.html
unstable-book/language-features/box-patterns.html:141: broken link - unstable-book/language-features/language-features/box-syntax.html
unstable-book/language-features/plugin.html:142: broken link - unstable-book/language-features/language-features/plugin-registrar.html
unstable-book/language-features/plugin.html:164: broken link - unstable-book/book/macros.html
unstable-book/language-features/plugin.html:248: broken link - unstable-book/reference/attributes.html
unstable-book/language-features/plugin.html:253: broken link - unstable-book/book/first-edition/macros.html
unstable-book/language-features/plugin.html:279: broken link - unstable-book/reference/attributes.html
unstable-book/language-features/plugin.html:354: broken link - unstable-book/reference/attributes.html
unstable-book/language-features/unboxed-closures.html:141: broken link - unstable-book/language-features/library-features/fn-traits.html
unstable-book/language-features/box-syntax.html:141: broken link - unstable-book/language-features/language-features/box-patterns.html
unstable-book/language-features/macro-vis-matcher.html:141: broken link - unstable-book/book/first-edition/macros.html
unstable-book/language-features/asm.html:293: broken link - unstable-book/language-features/language-features/global-asm.html

For cargo:

cargo/reference/source-replacement.html:141: broken link - cargo/reference/reference/specifying-dependencies.html
cargo/reference/source-replacement.html:145: broken link - cargo/reference/reference/config.html
cargo/reference/source-replacement.html:192: broken link - cargo/reference/reference/manifest.html
cargo/reference/source-replacement.html:195: broken link - cargo/reference/reference/config.html
cargo/reference/specifying-dependencies.html:148: broken link - cargo/reference/guide/index.html
cargo/reference/specifying-dependencies.html:227: broken link - cargo/reference/guide/index.html
cargo/reference/specifying-dependencies.html:275: broken link - cargo/reference/reference/manifest.html
cargo/reference/specifying-dependencies.html:277: broken link - cargo/reference/reference/manifest.html
cargo/reference/specifying-dependencies.html:427: broken link - cargo/reference/reference/config.html
cargo/reference/specifying-dependencies.html:527: broken link - cargo/reference/reference/manifest.html
cargo/reference/environment-variables.html:174: broken link - cargo/reference/reference/config.html
cargo/reference/environment-variables.html:251: broken link - cargo/reference/reference/build-scripts.html
cargo/reference/environment-variables.html:258: broken link - cargo/reference/reference/config.html
cargo/reference/index.html:142: broken link - cargo/reference/reference/specifying-dependencies.html
cargo/reference/index.html:143: broken link - cargo/reference/reference/manifest.html
cargo/reference/index.html:144: broken link - cargo/reference/reference/config.html
cargo/reference/index.html:145: broken link - cargo/reference/reference/environment-variables.html
cargo/reference/index.html:146: broken link - cargo/reference/reference/build-scripts.html
cargo/reference/index.html:147: broken link - cargo/reference/reference/publishing.html
cargo/reference/index.html:148: broken link - cargo/reference/reference/pkgid-spec.html
cargo/reference/index.html:149: broken link - cargo/reference/reference/source-replacement.html
cargo/reference/index.html:150: broken link - cargo/reference/reference/external-tools.html
cargo/reference/index.html:151: broken link - cargo/reference/reference/unstable.html
cargo/reference/build-scripts.html:169: broken link - cargo/reference/reference/environment-variables.html
cargo/reference/build-scripts.html:309: broken link - cargo/reference/reference/config.html
cargo/reference/manifest.html:165: broken link - cargo/reference/reference/build-scripts.html
cargo/reference/manifest.html:167: broken link - cargo/reference/reference/build-scripts.html
cargo/reference/manifest.html:174: broken link - cargo/reference/reference/build-scripts.html
cargo/reference/manifest.html:365: broken link - cargo/reference/reference/specifying-dependencies.html
cargo/reference/manifest.html:763: broken link - cargo/reference/reference/specifying-dependencies.html
cargo/reference/manifest.html:792: broken link - cargo/reference/reference/specifying-dependencies.html
cargo/reference/manifest.html:796: broken link - cargo/reference/reference/specifying-dependencies.html
cargo/reference/manifest.html:802: broken link - cargo/reference/reference/pkgid-spec.html
cargo/reference/manifest.html:809: broken link - cargo/reference/reference/specifying-dependencies.html
cargo/reference/unstable.html:364: broken link - cargo/reference/reference/config.html
cargo/reference/config.html:142: broken link - cargo/reference/reference/manifest.html
cargo/reference/config.html:258: broken link - cargo/reference/reference/source-replacement.html
cargo/reference/config.html:261: broken link - cargo/reference/reference/environment-variables.html
cargo/reference/publishing.html:208: broken link - cargo/reference/reference/manifest.html
cargo/reference/publishing.html:213: broken link - cargo/reference/reference/manifest.html
cargo/guide/dependencies.html:151: broken link - cargo/guide/reference/specifying-dependencies.html
cargo/guide/index.html:143: broken link - cargo/guide/guide/why-cargo-exists.html
cargo/guide/index.html:144: broken link - cargo/guide/guide/creating-a-new-project.html
cargo/guide/index.html:145: broken link - cargo/guide/guide/working-on-an-existing-project.html
cargo/guide/index.html:146: broken link - cargo/guide/guide/dependencies.html
cargo/guide/index.html:147: broken link - cargo/guide/guide/project-layout.html
cargo/guide/index.html:148: broken link - cargo/guide/guide/cargo-toml-vs-cargo-lock.html
cargo/guide/index.html:149: broken link - cargo/guide/guide/tests.html
cargo/guide/index.html:150: broken link - cargo/guide/guide/continuous-integration.html
cargo/guide/index.html:151: broken link - cargo/guide/guide/build-cache.html
cargo/guide/cargo-toml-vs-cargo-lock.html:151: broken link - cargo/guide/faq.html
cargo/guide/cargo-toml-vs-cargo-lock.html:218: broken link - cargo/guide/reference/pkgid-spec.html
cargo/guide/project-layout.html:169: broken link - cargo/guide/reference/manifest.html
cargo/getting-started/index.html:142: broken link - cargo/getting-started/getting-started/installation.html
cargo/getting-started/index.html:143: broken link - cargo/getting-started/getting-started/first-steps.html
cargo/getting-started/first-steps.html:183: broken link - cargo/getting-started/guide/index.html

Rust by Example has 27.5k links that need to be fixed, so not listing them here. A script will need to be written for it.