Switch to SDK Format and add NET5 as target. Also add Test app for NET5.

[muntablues]

No description provided.

[amellini]

Please merge this PR

[kmcginnes]

This PR looks great. Sorry for such a slow response.

I spent last night trying to get the project to build in the old CI system I had set up (AppVeyor), but didn't have much luck. So I started transitioning to GitHub Actions. I have it building and uploading the nuget package to GitHub as an artifact, but I haven't set up the tests yet.

I'll be honest, this will likely progress slowly. I will also need some assistance. I no longer use Windows and I only have an Apple Silicon M1 Mac. I don't plan to get Windows up and running just to test if this package still works as advertised in WPF.

So, if I can get a volunteer to be the tester for getting this across the finish line that would be a huge help.

[amellini]

@kmcginnes I'll be happy to test this, what kind of test do you need?
Usage test or you need to test code and use it in a custom app?

[guenterrudigier]

@kmcginnes
Can you please merge die PR, THX

[kmcginnes]

I'm sorry, it is not as simple as that.

Months ago I attempted to get things set up in order to merge this, but continually ran in to problems. And then from there I just haven't found a dedicated set of many hours to devote to this work.

Here's what I remember that needs to happen:

• Move entire CI to something new (I was setting up GitHub Actions)
  • Ensure deployments to the public NuGet repository do not occur until I manually approve a release
  • Ensure all tests run and pass
  • Ensure artifacts are posted to the "Releases" area of GitHub
  • Ensure build buttons on GitHub readme page are working
• Update code base for the breaking change moving to .net 5
  • Update the major version to indicate a breaking change
  • Ensure the Nuget package works properly in a brand new .net 5 application
  • Remove any old code that is no longer necessary
  • Update csproj files to the new way
• Push a beta version of the Nuget package to the public NuGet repository
  • Write release notes
  • Update GitHub readme

There is probably more, but once I realized that this was going to be a multiple hour thing I had to give up on it for the time being, and I never made it back around to completing these items.

I welcome some assistance on this front. There is a branch called github-actions that was my initial work on this front. Perhaps you can help me complete it.