Updates Commands for newer Symfony versions

Merge pull request #224 from BureauVierkant/command-di

Removed ContainerAwareCommand in favor of Command with DI

Fixes PHP 7.1 Compatibility

2.0.1

replaces another assertion

Compatibility with 4.0 and 3.4

This release makes the bundle compatible with 4.0 versions. As a result, some internal classes and implementations have changed.

It also raises the minimum PHP version by taking advantage of newer type-hinting features.

Compatibility with Symfony 3.3

This release adds compatibility with Symfony 3.3 - in particular the Process component changes which have been made there.

Small Compatibility Improvements/Doc Fixes

1.4.1

refs cron/scheduled jobs docs

Symfony3 Support & Compatibility Fixes

1.4.0

fixes previous commit

Adds Command Scheduling

This release adds the ability to have commands scheduled in certain intervals like every minute, hourly, daily or using any custom logic that is needed in the application.

It is intended to replace the usage of the system's cron with a distributed scheduler that can be run on multiple servers to avoid any single points of failure and track execution of scheduled jobs.

Performance & Doc Fixes, Small Feature Additions

This improves performance when working with large job tables. It also improves the documentation, and adds a few smaller convenience features.

Adds Queues & Priorities

This release adds support for queues and job priorities. Please see the documentation for details.