Add DefaultCommandMap module to define the default command map.

src/core/Command.h

@@ -13,8 +13,12 @@ public:
         FORWARD_ON_TO_CHAR,
         BACK_UP_TO_CHAR,
         BACK_ON_TO_CHAR,
-        DELETE,
+        DELETE_MOTION,
         DELETE_LINE,
+        DELETE_CHAR,
+        DELETE_CHAR_BACK,
+        CHANGE_MOTION,
+        CHANGE_LINE,
         COMMAND_COUNT,
     };