title: MPAndroidChart v3.x.x: upgraded from 2.x.x labels
body: <p>As mentioned in the title, I am working on a project where MPAndroidChart version 2.2.3 is used. In this project, Bar chart is currently used.</p>
  
  <p>I am doing the version upgraded to 3.0.1. After the upgrade, few things below does not work anymore:</p>
  
  <p>1.</p>
  
  <pre><code>mBarChart.setDescription("");
  </code></pre>
  
  <p>2.</p>
  
  <pre><code>xAxis.setSpaceBetweenLabels(1);
  </code></pre>
  
  <p>3.</p>
  
  <pre><code>BarData barData = new BarData(ArrayList&lt;String&gt;, ArrayList&lt;IBarDataSet&gt;);
  </code></pre>
  
  <p>I looked around but seems like there is no explanation for those issue, even in the release note.</p>