SystemsLab 0.0.12

Changed

• The systemslab controller will now retry jobs if they fail instead of just crashing the task.
• The agent now sandboxes job steps via a cgroup. Note that this only works if a cgroupv2 filesystem is mounted at /sys/fs/cgroup/unified. (systemd does this by default, other systems may not).
• All bash shell steps will now be run with set -xe.