title: Qt animation with double values
body: <p>I'm animating the value transition in a gauge</p>
  
  <pre><code>CircularGauge {
      onValueChanged: {
          console.info('val' , value)
      }
  
      Behavior on value {
          RotationAnimation {
              duration: 20000
          }
      }
  }
  </code></pre>
  
  <p>But the animation only happens in steps of 1. I did not find a way to make them do smaller steps.</p>
  
  <p>Is there a way?</p>