Updating the test projects to specifiy `shadowCopy=false` and to reference the VS test adapter package.

Update versions in post-dev15 branch to 2.1.0-beta1

Handle all expression-bodied members correctly in TryGetActiveTokens

Account for the fact that ```Not <null of Boolean?>``` is not true.

Set an appropriate title on the FindRefs window in response to new editor API changes.

Subclass the editor's BlockTag so we can pick up some heuristic changes they're making on their end.

Add Razor Language Service IVT shims

added navigate to, FAR OOP options to Roslyn Option page

Removing the last packages.config and replacing them with project.json

Instrument the body of an expression-bodied lambda for dynamic analysis

Fixes #15223.

Fixes #12940
Fixes #14110
Fixes #15640

Do not mark argument values as bad due to issues with names.

Check for assembly resolution errors in bootstrap build

VisualBasic function breakpoint binding

add PrimaryWorkspace concept in OOP

Handle additional cases in MemberSemanticModel.GetQueryEnclosingBinder

Our current setup for .Net Core requires us to do manual assembly redirection in our MSBuild Task.  The setup has no
good way to detect at compile time when our source code and NuGet references get out of date.  This change allows us
to at least detect at bootstrap time.