bugsnag-laravel: LaravelLogger does not implement Log::listen() and Log::getMonolog(), present in default Log facade

Laravel’s Log facade has two very handy functions, Log::listen() and Log::getMonolog().

When Bugsnag’s handler is added, it replaces the Log facade handler, but it doesn’t implement these methods:

These are very handy for console commands, where log messages coming from internal recyclable classes can be captured and displayed as console output.

Tested with bugsnag/bugsnag-laravel at ^2.5 (2.5.0)