Changes:
* Make Visual Studio 2019 a prerequisite for building this repo
* Update .sln files
* Update Windows SDK to 17134
* Update developer docs
* Disable ANCM tests
* Update to .NET Core SDK 3.0 Preview 2
* Use Microsoft.NET.Sdk.Razor as a package consistently accross the repo
* React to changes in metadata from Microsoft.NETCore.App
* React to changes in .NET Core SDK
* Attempt to workaround CodeCheck.ps1 failure which doesn't repro locally or on different agents. Possibly due to differences in the version of the PowerShell task?
* Remove dead YML file
* Rename usages of win7-{x64,x86} to win-{x64,x86}
* Update KoreBuild to 3.0.0-build-20190219.1
* Pair implementations and unit tests side by side in src/ and test/ folders
* Update .sln and project paths
* Rename unit test projects from Test.csproj => Tests.csproj
* Update KoreBuild properties to allow building projects, not solutions
Andrew Stanton-Nurse
Justin Kotalik
Nate McMaster
Nate McMaster
Chris Ross