Many new translations, centralized links, and more

### Added

- Arabic translation (#444).
- v1.1 French translation.
- v1.1 Dutch translation (#371).
- v1.1 Russian translation (#410).
- v1.1 Japanese translation (#363).
- v1.1 Norwegian Bokmål translation (#383).
- v1.1 "Inconsistent Changes" Turkish translation (#347).
- Default to most recent versions available for each languages
- Display count of available translations (26 to date!)
- Centralize all links into `/data/links.json` so they can be updated easily

### Fixed

- Improve French translation (#377).
- Improve id-ID translation (#416).
- Improve Persian translation (#457).
- Improve Russian translation (#408).
- Improve Swedish title (#419).
- Improve zh-CN translation (#359).
- Improve French translation (#357).
- Improve zh-TW translation (#360, #355).
- Improve Spanish (es-ES) transltion (#362).
- Foldout menu in Dutch translation (#371).
- Missing periods at the end of each change (#451).
- Fix missing logo in 1.1 pages
- Display notice when translation isn't for most recent version
- Various broken links, page versions, and indentations.

### Changed

- Upgrade dependencies: Ruby 3.2.1, Middleman, etc.

### Removed

- Unused normalize.css file
- Identical links assigned in each translation file
- Duplicate index file for the english version

Be careful about inconsistent changelogs

## Added

- New paragraph on the risks of inconsistent changelog (and releases) in the
Bad Practices section from @RichardLitt

6 new translations, brand new identity, and more.

### Added
- New visual identity by @tylerfortune8.
- Version navigation.
- Links to latest released version in previous versions.
- "Why keep a changelog?" section.
- "Who needs a changelog?" section.
- "How do I make a changelog?" section.
- "Frequently Asked Questions" section.
- New "Guiding Principles" sub-section to "How do I make a changelog?".
- Simplified and Traditional Chinese translations from @tianshuo.
- German translation from @mpbzh.
- Italian translation from @roalz.
- Swedish translation from @magol.
- Turkish translation from @karalamalar.
- French translation from @zapashcanon.
- Brazilian Portugese translation from @aisamu.
- Polish translation from @amielucha.

### Changed
- Start using "changelog" over "change log" since it's the common usage.
- Start versioning based on the current English version at 0.3.0 to help
translation authors keep things up-to-date.
- Rewrite "What makes unicorns cry?" section.
- Rewrite "Ignoring Deprecations" sub-section to clarify the ideal
  scenario.
- Improve "Commit log diffs" sub-section to further argument against
  them.
- Merge "Why can’t people just use a git log diff?" with "Commit log
  diffs"
- Fix typos in Simplified Chinese and Traditional Chinese translations.
- Fix typos in Brazilian Portugese translation.
- Fix typos in Turkish translation.
- Fix typos in Czech translation.
- Fix typos in Swedish translation.
- Improve phrasing in French translation.
- Fix phrasing and spelling in German translation.

### Removed
- Section about "changelog" vs "CHANGELOG".

Russian, Brazilian Portugese, Spanish translations.

It's not just about open source

Should you ever rewrite a change log?

Fix factual error on date formats, typos, and erroneous links.

### Changed
- Update year to match in every README example.
- Reluctantly stop making fun of Brits only, since most of the world
  writes dates in a strange way.

### Fixed
- Fix typos in recent README changes.
- Update outdated unreleased diff link.

Acknowledge GNU change log style, point to ISO 8601, clean links.

README section on 'yanked' releases.

Markdown links to tags on versions headings.