📄 docs: Update version, add changelog

CHANGELOG.md

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+## Changelog
+### 1.5.1 - 2025-02-13
+- Fixed bug in filter removal functionality
+
+### 1.5.0 - 2025-02-13
+- Added repo update feature
+
+### 1.4.0 - 2025-02-13
+- Added admin configuration page
+
+### 1.3.0 - 2025-02-12
+- Feature-complete for initial release
+- Add pagination
+- Add general reset button
+- Add tag close functionality
+
+### 1.2.0 - 2025-02-05
+- Name change to reflect future ability to filter any content, not just `resources`
+- Add secondary search template
+
+### 1.1.0 - 2025-02-05
+- Fully templated for use in any theme
+- Added result sorting
+
+### 1.0.0 - 2025-02-04
+- Initial release