docs: add changelog

CHANGELOG.md

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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [v0.2.14] - 2025-09-08
+
+### Added
+- Support MMKV dump in QQMusic Mac 10.x.
+
+## [v0.2.13] - 2025-09-06
+
+### Changed
+- Updated project namespace and repository URLs to new url
+- Upgraded Go version requirement to 1.25
+- Restricted KGG database support to Windows platform only
+- Enhanced MMKV key extraction logic with improved reliability
+
+### Fixed
+- Fixed NCM metadata parsing to properly handle mixed-type artist arrays
+- Drop i386 targets in CI build
+
+## [v0.2.12] - 2025-05-07
+
+### Added
+- KGG (KGMv5) file format support
+- Support for `.mflacm` file extension
+
+### Changed
+- Updated default version identifier to "custom" for development builds
+- Upgraded GoLang version
+
+## [v0.2.11] - 2024-11-05
+
+### Fixed
+- Resolved relative path resolution issues on Windows platforms (#108)
+- Improved cross-platform compatibility for file path handling
+
+---
+
+## Historical Versions
+
+**Note**: This changelog was created starting from v0.2.11. For changes in earlier versions (v0.2.10 and below), please refer to the project's git commit history:
+
+```bash
+git log --oneline --before="2024-11-05"
+```
+
+Or view the complete commit history on the project repository for detailed information about features, fixes, and improvements in previous releases.