title: Adding emoji reaction by unicode not working
body: <p>Currently, I am making a music discord bot and I want it to display the list of songs it is currently playing.</p>
  
  <p>The user should be able to interact with the list by moving to each page with a left arrow and right arrow emoji.</p>
  
  <p>The problem is that, when I try to react to the message via a unicode, it does not seems to work as follows:</p>
  
  <pre><code>message.addReaction("U+2B05").queue();
  message.addReaction("U+2B07").queue();
  </code></pre>
  
  <p>it throws an error saying that the Emoji is not found during runtime, even though that is the respective unicode for the emoji I wanted to sent.<Br>
  I have tried to use <code>2B05</code> or <code>Left Arrow</code> in the string and it does not work too.</p>