message: Fix one read receipt randomly not appearing
  The velociraptor was only actioning hidden -> visible transitions
  if the position had changed, so the one RR that stayed in position
  but became visible... didn't become visible.
diff: @@ -62,11 +62,11 @@ module.exports = React.createClass({
  oldNode.style.visibility = c.props.style.visibility;
  }
  });
  + //console.log("translation: "+oldNode.style.left+" -> "+c.props.style.left);
  + }
  if (oldNode.style.visibility == 'hidden' && c.props.style.visibility == 'visible') {
  oldNode.style.visibility = c.props.style.visibility;
  }
  - //console.log("translation: "+oldNode.style.left+" -> "+c.props.style.left);
  - }
  self.children[c.key] = old;
  } else {
  // new element. If we have a startStyle, use that as the style and go through
  