Support for observable models, fixes #259

example/todomvc/editable_label.html

Index: example/todomvc/editable_label.html
diff --git a/example/todomvc/editable_label.html b/example/todomvc/editable_label.html
index c127fe5145cc1cddd1a75daa328fc3ca7aa4ec1e..27e26ebe3173253e193846cab6c86af7981a17e0 100644
--- a/example/todomvc/editable_label.html
+++ b/example/todomvc/editable_label.html
@@ -45,7 +45,9 @@ BSD-style license that can be found in the LICENSE file.
 
     void edit() {
       editing = true;
-      dispatch();
+
+      // This causes _editBox to be inserted.
+      deliverChangesSync();
 
       // For IE and Firefox: use .focus(), then reset the value to move the
       // cursor to the end.