sidekiq.rb in sidekiq-2.2.0

- old
+ new

@@ -3,9 +3,10 @@
 require 'sidekiq/client'
 require 'sidekiq/worker'
 require 'sidekiq/redis_connection'
 require 'sidekiq/util'
 
+require 'sidekiq/extensions/class_methods'
 require 'sidekiq/extensions/action_mailer'
 require 'sidekiq/extensions/active_record'
 require 'sidekiq/rails' if defined?(::Rails::Engine)
 
 require 'multi_json'