FoldGit 0.4.2

• macOS 新增应用内更新，支持下载安装并重启；旧版需先手动安装本版本，后续可直接在应用内升级。
• macOS 更新说明跟随应用语言，中文界面显示中文，其余语言暂时显示英文。

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• Add in-app updates on macOS with download, installation and relaunch. Install this version manually once to enable future in-app updates.
• Show macOS release notes in the app's language: Chinese for Chinese interfaces, and English for all other languages for now.