Store item in List rather than pointer to item

src/hulk/list.d

@@ -13,7 +13,7 @@ struct List(T)
     /**
      * Linked list item.
      */
-    T * item;
+    T item;
 
     /**
      * Next list entry.
@@ -23,7 +23,7 @@ struct List(T)
     /**
      * Add an item to this linked list.
      */
-    public void add(T * item)
+    public void add(T item)
     {
         List!T * last_entry = last_entry();
         List!T * new_entry = A1.allocate!(List!T)();
@@ -34,7 +34,7 @@ struct List(T)
     /**
      * Allow foreach iteration across a List.
      */
-    public int opApply(scope int delegate(T *) dg)
+    public int opApply(scope int delegate(ref T) dg)
     {
         List!T * entry = &this;
         while (entry.next != null)