Generalize the version update script, add support for LKG

Fix building of pre-release NuGet packages

Port a couple of changes from stabilization

Build numbers used to be QueueName_BuildNumber, but that's no longer the
case. It's now just a build number and that's it.

Disallow object initializers in default parameter values

Remove baked in knowledge that a completion item represents a parameter name.

Merge stabilization into master

Remove TestResourcesProprietary.csproj from Dependencies.sln

Fix printing of REPL output in interactive host

Order FullyQualify results in the same order as Add-Import

Simplify completion helper code.

Don't repackage product binaries in the diagnostics window VSIX

Fix up NuGetTargetMoniker for CoreClr-targeting projects

This got switched during the MicroBuild merge somehow. This switches
it back.

Move to microbuild v2

Remove unnecessary field.

Merge future into master

* Fixes to source generator documentation

* Add feature flag info.

* Remove extraneous sentence

Restore the old IIndentationService.

Postpone AnalyzerChanged operations when analyzer is changed on file system