Audio Context Changes

Not too sure where to ask, but I will start here. As a result of autoplay policy changes on Chrome, any node that makes use of an AudioContext needs to perform a .resume if the state is not 'running' . I am making the change for the microphone node, but a similar change is needed for the play audio node.

Is it ok for me to make the change and create a pull request.

but of course ! please do so.

Pull request created.