Added changelogs

app/MindWork AI Studio/wwwroot/changelog/v0.4.0.md

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+# v0.4.0, build 138 (2024-05-26 13:26 UTC)
+- Added possibility to choose & change the AI model
+- Added tooltips to the navigation
+- Added metadata to the build process
+- Added consistent build & version numbers
+- Added logging of the metadata
+- Added about page & show metadata
+- Added the FSL-MIT license
+- Added README file
+- Fixed link handling; links are now opened by the system's default browser
+- Fixed Markdown header styling