title: discord.py How to get logs from a DM channel
body: <p>I'm trying to detect whether the last message my bot has sent to a user is identical to the one it needs to send (Python 3.5). </p>
  
  <p>I've tried to use <code>client.logs_from(channel,limit=1)</code> but I'm not sure how to make it get the logs from a DM.</p>