Upgrade Nuget-package .NetStandard.Library dependency to 2.0

[MayMih]

Now your Nuget-package depends on .NetStandard.Library v1.3 which makes DLL hell in the project:

See microsoft recomendation here https://docs.microsoft.com/en-us/dotnet/standard/net-standard?tabs=net-standard-2-0#which-net-standard-version-to-target:

If you need to support .NET Standard 1.x, we recommend that you also target .NET Standard 2.0. .NET Standard 1.x is distributed as a granular set of NuGet packages, which creates a large package dependency graph and results in developers downloading a lot of packages when building. For more information, see Cross-platform targeting and .NET 5+ and .NET Standard later in this article.

Can you upgrade NuGetPackage Dependemcy to version 2.0+ ?