title: Slim 3 blackholing errors
body: <p>I have a small slim 3 app, and when I throw an exception slim simply shows the generic error message:</p>
  <blockquote>
  <h1>Slim Application Error</h1>
  <p>A website error has occurred. Sorry for the temporary inconvenience.</p>
  </blockquote>
  <p>In slim 2 you can do something like this to turn on debug mode giving you backtraces etc:</p>
  <pre><code>$app-&gt;config('debug', true);
  </code></pre>
  <p>In slim 3 there doesn't seem to be one. Additionally, it seems to be overriding my exception and error handlers.</p>
  <p>How can I get slim to spit out errors, or at least to call my error handlers (Which pipe the output to kint for debug information)</p>