0.9.0

NEW: allow forcing enhanceSigchildCompatibility to the Symfony Process component.

On OS such as Debian or Ubuntu, where the Symfony Process component does not detect SigchildCompatibility properly, this helps to retrieve the exit code of Symfony command-line scripts executed by queue consumers.
It also helps f.e. in making sure that Symfony command-line scripts executed by queue consumers can be properly reaped on timeout expiration if using the $timeout argument in the Process constructor.

In order to enable this, set to true the value of configuration parameter kaliop_queueing.default.console_commands.force_sigchild_enabled