[TASK] Raise version to 0.11.6

Change-Id: I6f8b835baeb58b55fe8bd7a9e3ae326db94a3dab
Reviewed-on: http://review.typo3.org/35358
Reviewed-by: Armin Ruediger Vieweg <armin@v.ieweg.de>
Tested-by: Armin Ruediger Vieweg <armin@v.ieweg.de>