title: Accessing previous MSMessages from MSConversation
body: <p>If I have sent a few messages in my iMessage app and I want to access previous messages (obviously just my own app-created messages, not just any messages the users have sent in their conversation), is there a way I can do that?</p>
  
  <p>I can access the most previous message with this:</p>
  
  <p><code>[self activeConversation].selectedMessage;</code></p>
  
  <p>Any way to loop through previous messages that might not have even ever been clicked by the user (so simply storing it in <em>user defaults</em> is not an option)</p>