categories.rb in picky-4.19.5

- old
+ new

@@ -7,9 +7,10 @@
     forward :each,
             :first,
             :map,
             :map!,
             :include?,
+            :empty?,
             :to => :categories
 
     each_forward :cache,
                  :dump,
                  :empty,
\ No newline at end of file