title: Is there any way to listen vuex store element without using it inside the template
body: <p>I have seen a lot of examples.
  The most complicaded or simple always uses the value as a prop for a element in your component</p>
  <p>{{theValue}}</p>
  <p>When you use it so, things go well.</p>
  <p>But I'd want to have a way to be notified of 'theValue' change without using it
  And also I dont want to use the trick or having a hidden element. Simply, I only want to get notified.</p>
  <p>Any idea ?
  Thanks in advance</p>