title: Galleria Images smaller than stage
body: <p>I've got an galleria gallery and my stage has a size of 300x200px but the images contained are resized to 280x130px so there's a border around the images and they are centered inside the stage area.</p>
  
  <p>Is there any way to get rid of this behavior and resize images to 100% of the stage width/height if possible?</p>
  
  <p>Stage width/height is set on init:</p>
  
  <pre><code>$('#galleria').galleria({
     height: 200, 
     width: 300, 
     extend: function() {...} //some functionality for an additional navigation
  });
  </code></pre>