lib/grape.rb in grape-0.6.1 vs lib/grape.rb in grape-0.7.0

@@ -4,19 +4,21 @@
 require 'rack/builder'
 require 'rack/accept'
 require 'rack/auth/basic'
 require 'rack/auth/digest/md5'
 require 'hashie'
+require 'set'
 require 'active_support/core_ext/hash/indifferent_access'
 require 'active_support/ordered_hash'
 require 'active_support/core_ext/object/conversions'
 require 'active_support/core_ext/array/extract_options'
 require 'grape/util/deep_merge'
 require 'grape/util/content_types'
 require 'multi_json'
 require 'multi_xml'
 require 'virtus'
 require 'i18n'
+require 'thread'
 
 I18n.load_path << File.expand_path('../grape/locale/en.yml', __FILE__)
 
 module Grape
   autoload :API,                 'grape/api'