title: gunicorn autoreload on source change
body: <p>Finally I migrated my development env from runserver to gunicorn/nginx.</p>
  
  <p>It'd be convenient to replicate the autoreload feature of runserver to gunicorn, so the server automatically restarts when source changes. Otherwise I have to restart the server manually with <code>kill -HUP</code>.</p>
  
  <p>Any way to avoid the manual restart?</p>