title: Where should I put service components while using Redux?
body: <p>In my app I got service classes like SpeechRecognizer, VoiceRecorder ...
  I wonder should I put them into the state of application, my personal opinion that they don't form the state, so then where to put them.<br>
  Also to notice, SpeechRecognizer is initialized with callbacks that are called when certain event occurs, so who shall subscribe to them and how to implement that subscription ?</p>