message: Changed regex to trim end  +
diff: @@ -76,7 +76,7 @@ class NavigationMotion extends React.Component<NavigationMotionProps, Navigation
  duration={duration}>
  {styles => (
  styles.map(({data: {key, state, data}, style}) => {
  - var crumb = +key.replace(/\+/g, '');
  + var crumb = +key.replace(/\++$/, '');
  var scene = <Scene crumb={crumb} renderScene={renderScene} /> ;
  return children(style, scene, key, crumbs.length === crumb, state, data);
  }).concat(
  