title: Using Sucker Punch with Active Job, Is there a way to cancel a queued job?
body: <p>So I have 
  <code>MyJob.perform_in(60, @user)</code>,
  Which will perform my job in 60 seconds.</p>
  
  <p>I want to cancel this Job if this line of code is ran again replacing it in the queue. </p>
  
  <p>I have had no luck researching.</p>