-- v6: windows.media.speech: Add pausing to the recognition session worker. windows.media.speech: Add a worker thread to the recognition session. windows.media.speech/tests: Test starting, stopping, pausing and resuming the recognition session. windows.media.speech/tests: Test the recognizer state. windows.media.speech: Return IAsyncAction from session_PauseAsync. windows.media.speech: Return IAsyncAction from session_StopAsync. windows.media.speech: Do not force calling convention on internal callbacks. windows.media.speech: Move constraints vector to the recognition session.