Location info added to CodeCompilerError

RoslynCodeCompiler creates debug symbols

RoslynCodeCompiler moved to new project

RoslynCodeCompiler added calling RoslynCodeCompiler via Microsoft.CodeAnalysis.CSharp

Use netcoreapp3.0 and update descriptions/version

Publish preview packages, take 2

Fix matrix build

Try to factor ci into a matrix build

Fix tests on Windows

NuGet push to GPR doesn't work on Linux

Try package publishing again

Fix action refs check

Update linux.yml

Try to fix action conditions

Fix publish