XMLUnit.NET 2.7.0-beta-01 Released

This is the very first release of XMLUnit.NET that supports .NET Standard 2.0 in addition to the traditional .NET Framework 3.5. Only the build process and the nuget packages have changed, there is no other difference between this release and XMLUnit.NET 2.6.0. If you don't need support for .NET Standard there is no reason to upgrade.

This release has been labeled beta as the packaging needs more thorough testing by the community.

Many thanks to @shatl who performed most of the heavy lifting which has made this release possible.