* Preserve window size when swapping Fluent and Simple themes.
* Simplify test batch files.
* Trim output.
* Different output type depending on the configuration.
* Menu fixes for macOS.
* Delete nuget.config.
* Nullable enabled.
* Fixes in ViewModel class names.
* ViewModel for MainControl as MainWindow state.
* Preserve window state when swapping Fluent and Simple themes.
* No remove axaml files for makes the sample simpler.
* Creation of utilities class.
* Avoid using ref Bitmap on MainViewModel.
* Avoid application crashing when dotnet.png or avalonia.png are missing. Using an replace embeded image instead.
* Conditionally invoke of UseAvaloniaNative at runtime.