Adding todo note to consider final/field-usage - LANG-551

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@833363 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/commons/lang/Range.java

@@ -26,6 +26,7 @@ import java.util.Comparator;
  * @version $Id: Range.java 830032 2009-10-27 00:15:00Z scolebourne $
  */
 // TODO: Serializable?
+// TODO: Make class final and use fields instead of getters?
 public class Range<T> {
 
     private final Comparator comparator;