Add new (key)frame.

Button add to stage fix.
getCharacters sync fix

src/com/jpexs/decompiler/flash/easygui/LibraryTreeTable.java

@@ -95,7 +95,7 @@ public class LibraryTreeTable extends JTreeTable {
                 }
             }
         });
-        setTransferHandler(new TagTransferHandler());
+        setTransferHandler(new CharacterTagTransferHandler());
         setDragEnabled(true);
         setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
     }