authority.rb in authority-2.8.0

- old
+ new

@@ -1,7 +1,8 @@
 require 'active_support/concern'
 require 'active_support/core_ext/class/attribute'
 require 'active_support/core_ext/hash/keys'
+require 'active_support/core_ext/hash/slice'
 require 'active_support/core_ext/string/inflections'
 require 'active_support/rescuable'
 require 'forwardable'
 require 'logger'
 require 'authority/security_violation'