Added DynamicArray, DynamicList, and HashMap

modules/beast_core/memory/beast_HeapBlock.h

@@ -91,10 +91,17 @@ public:
         After creation, you can resize the array using the malloc(), calloc(),
         or realloc() methods.
     */
-    HeapBlock() noexcept  : data (nullptr)
+    HeapBlock() noexcept
+        : data (nullptr)
     {
     }
 
+    HeapBlock (HeapBlock& other)
+    {
+        data = other.data;
+        other.data = nullptr;
+    }
+
     /** Creates a HeapBlock containing a number of elements.
 
         The contents of the block are undefined, as it will have been created by a