title: Dynamically resizing a Label within a Scrollview?
body: <p>Let's say you have a setup like the following:</p>
  
  <pre><code>ScrollView:
     size_hint: (1, 0.5)
  
     Label:
        size_hint: (1, None)
  </code></pre>
  
  <p>Initially, the Label has no content/text. If I understand correctly, when the objects are created, the Label's height is <code>None</code>. </p>
  
  <p>When the app is run, the Label's <code>text</code> property is set to multiple lines of text, which should push the content of the Label outside the boundaries of the ScrollView. However, for scrolling to happen, it seems that the Label's y dimension/height has to be dynamically resized.</p>
  
  <p>What is the best way to dynamically resize the height of the Label in accordance with the Label's new content such that a scrolling action can occur?</p>