title: Where to put Active Support Notification subscribers
body: <p>I want to use Active Support Instrumentation in refactoring my app. It's a fairly large app and there is going to be a lot of Subscribers.</p>
  
  <p>Where would be the best place to put my Subscriber files?</p>
  
  <p>The obvious place to put them seems to be config/initializers but it doesn't feel right. Especially since my Subscribers would be better orgarnized if split into multiple files.</p>
  
  <p>Any suggestions?</p>