title: How to automatically change chat bubble's size?
body: <p>I'm using <strong>Swift 3</strong>. I've already made this chat bubbles, but I want it to change sizes...<br>
  for example, when there 4 lines of text it's not changing size (making bigger), and I want it to do automatically. How can I do it?</p>
  
  <p>Thank You!</p>