title: Anko toast() method causes java.lang.NoSuchMethodError when called from Fragment
body: <p>I'm having following error when I'm calling toast("Toast's message text") from Android Fragment:</p>
  
  <blockquote>
    <p>java.lang.NoSuchMethodError: No virtual method getActivity()Landroid/app/Activity; in class Landroid/support/v4/app/Fragment; or its super classes (declaration of 'android.support.v4.app.Fragment' appears in name-of-the-file-classes.dex)</p>
  </blockquote>
  
  <p>I'm using Anko v0.9.1 and Kotlin 1.0.6</p>
  
  <p>What might be the cause of this crash? Standard Android Toast works just fine. Also toast() function works inside Activities. </p>