title: Drawable tinting for api <21
body: <p>Is it possible to make drawable tinting work for api &lt; 21? </p>
  
  <pre><code>&lt;bitmap
      xmlns:android="http://schemas.android.com/apk/res/android"
      android:src="@drawable/ic_calendar"
      android:tint="@color/primary" /&gt;
  </code></pre>
  
  <p>Works just fine but only for devices with API21. Any workaround for lower api devices or AppCompat support? Can't find anything. </p>