clean_class.rb in asynchronous-1.0.1

- old
+ new

@@ -6,9 +6,10 @@
     (self.instance_methods-[
         :undef_method,
         :object_id,
         :__send__,
         :methods,
+        :alias,
         :new
     ]).each do |method|
       undef_method method
     end
 
\ No newline at end of file