Any plans to update NuGet for .NET Core compatibility

[GregTerrell]

The library works fine under WPF Core 3.1 (did not try it under Core 3.0). But Packages displays restore warning. I thought that might be your 1.0.9 fork but that has the same targeting warning.

Package 'WPFCustomMessageBox 1.0.7' was restored using '.NETFramework,Version=v4.6.1, .NETFramework,Version=v4.6.2, .NETFramework,Version=v4.7, .NETFramework,Version=v4.7.1, .NETFramework,Version=v4.7.2, .NETFramework,Version=v4.8' instead of the project target framework '.NETCoreApp,Version=v3.1'. This package may not be fully compatible with your project.

Thanks for creating this! Really improved the ability for my current project's workflow to be clearly represented in the UI.
Greg