v20.1.8-beta

What's Changed

• Replaces file header with simpler non-xml based form by @smaillet in #294
• Fix header blank line elision by @smaillet in #295
• Formal Release Build (Bump Version) by @smaillet in #296
• AddedSourceRange and SourcePosition by @smaillet in #297
• Updates to support LTSC by @smaillet in #298
• Add docs support for TextUx by @smaillet in #299
• Add support for System.CommandLine by @smaillet in #300
• Add multi-targeting TFM for Runtime.Utils by @smaillet in #302
• Added NuGet Pkg generation for the CommandLine project by @smaillet in #301
• Updated to support better error reporting by @smaillet in #303
• Added Unit tests for CommandLine by @smaillet in #305

Full Changelog: v20.1.8-alpha.0.2...v20.1.8-beta