Removed blocking of main thread. Passed CancellationToken into spawned threads (#525)
Removed blocking of main thread. Passed CancellationToken into spawned threads (#525)

* Removed blocking of main thread. Passed cancellation token into spawned threads.
* remove unecessary .tolist()

joemcbride/graphql-dotnet,graphql-dotnet/graphql-dotnet,graphql-dotnet/graphql-dotnet,graphql-dotnet/graphql-dotnet,joemcbride/graphql-dotnet