udpated CHANGELOG

CHANGELOG

@@ -1,5 +1,6 @@
 * 1.16.1 (2014-XX-XX)
 
+ * sped up the slice filter
  * fixed for mb function overload mb_substr acting different
  * fixed the attribute() function when passing a variable for the arguments
 

lib/Twig/Extension/Core.php

@@ -692,7 +692,6 @@ function twig_array_merge($arr1, $arr2)
 function twig_slice(Twig_Environment $env, $item, $start, $length = null, $preserveKeys = false)
 {
     if ($item instanceof Traversable) {
-
         if ($item instanceof IteratorAggregate) {
             $item = $item->getIterator();
         }