serializable.rb in restpack_serializer-0.4.13

- old
+ new

@@ -2,10 +2,11 @@
 require_relative "options"
 require_relative "serializable/attributes"
 require_relative "serializable/filterable"
 require_relative "serializable/paging"
 require_relative "serializable/resource"
+require_relative "serializable/single"
 require_relative "serializable/side_loading"
 
 module RestPack
   module Serializer
     extend ActiveSupport::Concern
@@ -18,9 +19,10 @@
       @@class_map[identifier.split('::').last] = self
     end
 
     include RestPack::Serializer::Paging
     include RestPack::Serializer::Resource
+    include RestPack::Serializer::Single
     include RestPack::Serializer::Attributes
     include RestPack::Serializer::Filterable
     include RestPack::Serializer::SideLoading
 
     class InvalidInclude < Exception; end