Exclude anonymous frames from app path

[dcramer]

Fixes GH-481

[dcramer]

[stayallive]

If we have a class set for the exception we could maybe use reflection to find the file for the class to determine a little better if it's in the app context or not... or is that a stupid idea?

array:4 [▼
  "function" => "Illuminate\Routing\{closure}"
  "class" => "Illuminate\Routing\Router"
  "type" => "->"
  "args" => array:1 [▶]
]

// Return either the filename or false if it's defined in the core or extension.
$filename = (new ReflectionClass('Illuminate\Routing\Router'))->getFileName();

[Jean85]

I expressed my concerns here: #481 (comment)