add max_history

src/mechanize.cr

@@ -101,4 +101,14 @@ class Mechanize
   def add_to_history(page)
     history.push(page)
   end
+
+  # Get maximum number of items allowed in the history.  The default setting is 100 pages. 
+  def max_history
+    history.max_size
+  end
+
+  # Set maximum number of items allowed in the history.
+  def max_history=(length)
+    history.max_size = length
+  end
 end

src/mechanize/history.cr

@@ -1,7 +1,7 @@
 require "./page"
 
 class MechanizeCr::History < Array(MechanizeCr::Page)
-  property :max_size
+  property max_size : Int32
   def initialize(max_size = 100)
     @max_size = max_size
     super

src/mechanize/http/agent.cr

@@ -53,6 +53,16 @@ module MechanizeCr
         @history.pop
       end
 
+      # Get maximum number of items allowed in the history.  The default setting is 100 pages. 
+      def max_history
+        @history.max_size
+      end
+
+      # Set maximum number of items allowed in the history.
+      def max_history=(length)
+        @history.max_size = length
+      end
+
       private def set_request_headers(uri, headers)
         reset_request_header_cookies
         headers.each do |k,v|