history without inheriting Array

src/mechanize/history.cr

@@ -1,17 +1,20 @@
 require "./page"
 
-class MechanizeCr::History < Array(MechanizeCr::Page)
+class MechanizeCr::History
   property max_size : Int32
+  property array    : Array(MechanizeCr::Page)
+
+  forward_missing_to @array
 
   def initialize(max_size = 100)
     @max_size = max_size
-    super
+    @array = Array(MechanizeCr::Page).new
   end
 
   def push(page, uri = nil)
-    super page
-    while self.size > @max_size
-      shift
+    @array.push(page)
+    while size > @max_size
+      @array.shift
     end
     self
   end
@@ -20,6 +23,6 @@ class MechanizeCr::History < Array(MechanizeCr::Page)
     if size == 0
       # TODO: raise error
     end
-    page = super
+    page = @array.pop
   end
 end