Changed interfaces to abstract classes where possible in {lib,samples,pkg}

lib/utf/utf_core.dart

Index: lib/utf/utf_core.dart
===================================================================
--- lib/utf/utf_core.dart	(revision 12252)
+++ lib/utf/utf_core.dart	(working copy)
@@ -240,7 +240,7 @@
  * including the ability to get the current position, count remaining items,
  * and move forward/backward within the iterator.
  */
-interface _ListRangeIterator extends Iterator<int> {
+abstract class _ListRangeIterator extends Iterator<int> {

[ngeoffray, 2012/09/12 10:41:47]

Should that be implements?

[bakster, 2012/09/12 10:45:49]

Done.

   bool hasNext();
   int next();
   int get position;