Update edition and get the tests to pass

[AndyGauge]

This is meant to address the rlib lookup issue in skptic via patch and update error usage

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Summary

Status	Count
🔍 Total	443
✅ Successful	439
⏳ Timeouts	0
🔀 Redirected	0
👻 Excluded	0
❓ Unknown	0
🚫 Errors	4

Errors per input

Errors in ./src/about.md

• [ERROR] https://do.rust-lang.org/book/error-handling.html | Network error: error sending request for url (https://do.rust-lang.org/book/error-handling.html) Maybe a certificate error?

Errors in ./README.md

• [404] https://github.com/rust-lang-nursery/rust-cookbook/workflows/Deploy%20to%20GitHub%20Pages/badge.svg | Network error: Not Found
• [403] https://creativecommons.org/publicdomain/zero/1.0/legalcode | Network error: Forbidden
• [403] https://creativecommons.org/publicdomain/zero/1.0/deed.en | Network error: Forbidden
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[github-actions]

The link checker found some issues. Please review the report below:

Summary

Status	Count
🔍 Total	440
✅ Successful	439
⏳ Timeouts	0
🔀 Redirected	0
👻 Excluded	0
❓ Unknown	0
🚫 Errors	1

Errors per input

Errors in ./README.md

• [403] https://creativecommons.org/licenses/publicdomain/ | Network error: Forbidden
  Full Github Actions output

[github-actions]

The link checker found some issues. Please review the report below:

Summary

Status	Count
🔍 Total	440
✅ Successful	439
⏳ Timeouts	0
🔀 Redirected	0
👻 Excluded	0
❓ Unknown	0
🚫 Errors	1

Errors per input

Errors in ./README.md

• [403] https://creativecommons.org/ | Network error: Forbidden
  Full Github Actions output

[github-actions]

The link checker found some issues. Please review the report below:

Summary

Status	Count
🔍 Total	441
✅ Successful	439
⏳ Timeouts	0
🔀 Redirected	0
👻 Excluded	0
❓ Unknown	0
🚫 Errors	2

Errors per input

Errors in ./README.md

• [403] https://creativecommons.org/publicdomain/zero/1.0/ | Network error: Forbidden
• [403] https://creativecommons.org/ | Network error: Forbidden
  Full Github Actions output

[Copilot]

Pull Request Overview

This PR modernizes code examples and project configuration to use current Rust conventions, updates dependencies, and adjusts CI/build scripts.

• Replaced error-chain with anyhow/thiserror, added extern crate declarations in most doc examples
• Bumped crate versions in Cargo.toml and updated skeptic to use a Git branch
• Updated CI config and build.rs to feature-gate rand doc tests and exclude failing links

Reviewed Changes

Copilot reviewed 136 out of 137 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/web/**/*.md	Add extern crate declarations & swap error-chain for anyhow/thiserror
src/development_tools/versioning/semver-prerelease.md	Semver example updated (link reference truncated)
Cargo.toml	Bump dependency versions & switch skeptic to Git branch
ci/lychee.toml	Exclude problematic Creative Commons URLs
build.rs	Feature-gate rand doc tests under test-rand

Comments suppressed due to low confidence (2)

src/development_tools/versioning/semver-prerelease.md:22

• The link reference definition for is_prerelease is truncated; restore the full reference syntax, for example [is_prerelease]: https://docs.rs/semver/...#method.is_prerelease.

[`

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Summary

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✅ Successful	437
⏳ Timeouts	0
🔀 Redirected	0
👻 Excluded	2
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🚫 Errors	2

Errors per input

Errors in ./src/algorithms/randomness/rand-dist.md

• [404] https://docs.rs/rand/*/rand/distributions/trait.Distribution.html#tymethod.sample | Network error: Not Found

Errors in ./CONTRIBUTING.md

• [404] https://docs.rs/rand/*/rand/distributions/trait.Distribution.html#tymethod.sample | Error (cached)
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[github-actions]

The link checker found some issues. Please review the report below:

Summary

Status	Count
🔍 Total	441
✅ Successful	437
⏳ Timeouts	0
🔀 Redirected	0
👻 Excluded	2
❓ Unknown	0
🚫 Errors	2

Errors per input

Errors in ./src/algorithms/randomness/rand-dist.md

• [404] https://docs.rs/rand/*/rand/distributions/trait.Distribution.html#tymethod.sample | Network error: Not Found

Errors in ./CONTRIBUTING.md

• [404] https://docs.rs/rand/*/rand/distributions/trait.Distribution.html#tymethod.sample | Error (cached)
  Full Github Actions output