retry_strategy fix

Fixed key for retry_strategy

Compatible Dashboard with Symfony >3

Compatible Dashboard with Symfony >3

PHP 7 Error catching for SingleWorker

PHP 7 Error catching for SingleWorker compatible with PHP 5

Symfony 3 compatible commands

Sf3 compatible commands (#4)

* Update StartWorkerCommand.php

* Update StartScheduledWorkerCommand.php

Posibility to inject custom logger service

v0.2.1

Possibility of injecting logger service from Symfony (#3)

Add Single Worker Mode

Add a Single Worker mode and the posibility to share a booted Kernel

v0.1.0

Add methdos for parallel queues