title: Make node show stack trace after EventEmitter warning
body: <p>I have this error:</p>
  
  <pre><code>(node:11164) Warning: Possible EventEmitter memory leak detected. 11 end listeners added. Use emitter.setMaxListeners() to increase limit
  </code></pre>
  
  <p>No stack trace is given so I have no idea which event might be the culprit.</p>
  
  <p>I tried to work around it by overriding <code>console.warn</code> but the stack trace at that point is of no use since <code>console.warn</code> is not called when the listener is added but some arbitrary time afterwards.</p>