title: Manually Retry Job in Delayed_job
body: <p>Delayed::Job's auto-retry feature is great, but there's a job that I want to manually retry now. Is there a method I can call on the job itself like...</p>
  
  <pre><code>Delayed::Job.all[0].perform
  </code></pre>
  
  <p>or run, or something. I tried a few things, and combed the documentation, but couldn't figure out how to execute a manual retry of a job.</p>