title: How to create a large Blueprint button with a large icon?
body: <p>I can't seem to succeed in creating a large button with a large icon in it.</p>
  
  <p>This creates a large button, but the icon inside is small:</p>
  
  <pre><code>&lt;Button className="pt-large" iconName="circle-arrow-left"/&gt;
  </code></pre>
  
  <p>This forces the icon to be big, but creates extra space to the left of it (i.e., the button is not square any more).</p>
  
  <pre><code>&lt;Button className="pt-large"&gt;
    &lt;Icon iconName="circle-arrow-left" iconSize={20}/&gt;
  &lt;/Button&gt;
  </code></pre>