relaxes maps and lists notation

src/main/java/carpet/script/Context.java

@@ -18,6 +18,7 @@ public class Context
     public static final int SIGNATURE = 7;
     public static final int LOCALIZATION = 8;
     public static final int LVALUE = 9;
+    public static final int MAPDEF = 10;
 
     public final Map<String, LazyValue> variables = new HashMap<>();