Retain stack trace and unwrap exception for SinglePropertyAccessor + …

…add tests for graphql-dotnet#1155 (graphql-dotnet#2005)

Fix type registration for directive args (graphql-dotnet#1976)

Move ValidateName calls after NameConverter is applied (graphql-dotne…

…t#1961)

Make types in GraphTypesLookup non static (graphql-dotnet#1954)

Revert deletion of NuGet config & keys (graphql-dotnet#1933)

Do not include revision

Fix memory issue with WriteToStringAsync (graphql-dotnet#909)

* Fix memory issue with WriteToStringAsync
* Remove global.json with choco install in appveyor.yml
* Throw errors on invalid arguments

Bump version to 2.3.0

Await metrics middleware, fix time converter (graphql-dotnet#865)

* Update readme
* Metrics fix, branch name fix
* Await field instrumentation
* Always write extensions
* Enable metrics in Harness
* Include metrics with errors
* Bump version to 2.2.0

Official 2.0 release