Deprecate JobClass.queue, and the default_priority and default_run_at instance variables.
Deprecate JobClass.queue, and the default_priority and default_run_at instance variables.

zloydadka/que,gocardless/que,hardbap/que,joevandyk/que,gocardless/que,godfat/que,brandur/que,heroku/que,goddamnhippie/que,chanks/que