@aequasi You are right, `!$messages` is ambiguous but I've decided to use it anyway as it also handles any eventual `false`, empty array ecc. Just in case :)

Now that I think about it for the second time maybe `!is_array()` would be more appropriate. 

@kmfk I've added the logger support: https://github.com/eymengunay/qpush-bundle/commit/3dc726164664c8b5e4bca611a2fe52bb29c7a584

@kmfk @aequasi Which check would you prefer over `!$messages`?