5.1.0

What's Changed

• Update yoast/phpunit-polyfills requirement from ^3.0 to ^4.0 by @dependabot[bot] in #293
• Bump actions/checkout from 4 to 6 by @dependabot[bot] in #298
• Remove legacy docker-compose.yml by @pfefferle in #299
• Add namespacing and PSR-4 style autoloader by @pfefferle in #295
• Bump simple-icons from 13.21.0 to 16.7.0 by @dependabot[bot] in #305
• Bump @wordpress/env from 10.39.0 to 11.0.0 by @dependabot[bot] in #307
• Add unit tests by @pfefferle in #296
• unittests by @pfefferle in #308
• Bump ramsey/composer-install from 3 to 4 by @dependabot[bot] in #309
• Fix fatal error in REST API on WP 7.0 by @pfefferle in #311

Full Changelog: 5.0.0...5.1.0