title: Line numbers in stack traces for UWP apps
body: <p>I created a blank Universal Windows App project in Visual Studio 2015.</p>
  
  <p>I add something like:</p>
  
  <pre><code>try {
      string foo = null;
      int len = foo.Length;
  } catch (Exception ex) {
      System.Diagnostics.Debug.WriteLine(ex);
  }
  </code></pre>
  
  <p>I get a stack trace like:</p>
  
  <pre><code>Exception thrown: 'System.NullReferenceException' in TestStackTraces.exe
  System.NullReferenceException: Object reference not set to an instance of an object.
  at TestStackTraces.App.OnLaunched(LaunchActivatedEventArgs e)
  </code></pre>
  
  <p>i.e.,  No line numbers.</p>
  
  <p>How do I get line numbers to show up?</p>