not.rb in attestor-0.4.0

- old
+ new

@@ -35,10 +35,10 @@
       #   composition.validate
       #   # => Policy::InvalidError
       #
       # @return [undefined]
       def validate
-        return unless any_valid?
+        return unless detect(&:valid?)
         super
       end
 
     end # class And
 