remove self from message in Config#assert_no_unused_options! as it will dump Config instance
remove self from message in Config#assert_no_unused_options! as it will dump Config instance

ramiroaraujo/image_optim,toy/image_optim,toy/image_optim,toy/image_optim,weheartit/image_optim,mihailim/image_optim,ramiroaraujo/image_optim,mihailim/image_optim,mihailim/image_optim,weheartit/image_optim,ramiroaraujo/image_optim,weheartit/image_optim