title: CoordinatorLayout, AppBarLayout Reverse Scroll
body: <p>I building a chat application and I have a slight problem. My <code>RecyclerView</code> is upside down (newest messages at the bottom) and I need that tool bar would hide, when I scroll up, not down (practically reversed hiding behaviour or something). </p>
  
  <p>Is there are any Solutions with <code>CoordinatorLayout</code>, <code>AppBarLayout</code> to do that?
   Any tutorials perhaps? </p>