reactiveui/ReactiveUI — pull request #700 by jlaanstra (2014-08-13 09:48:04+00:00)
Title: InvokeCommand should call ExecuteAsync whenever possible.

`InvokeCommand` still calls `Execute` while we have the new awesome `ExecuteAsync` method. This PR makes `InvokeCommand` call `ExecuteAsync`, so we properly cleanup the `ExecuteAsync` subscription if we dispose `InvokeCommand`.