Feature idea summary

Cgroups plugin supports only proportional and max Block IO policies. We should support BFQ scheduler as well. Disk stats for the scheduler are in blkio.bfq.io_service_bytes and blkio.bfq.io_serviced files.

We want to provide sane defaults for people,
so having a configuration file that emulates the screen config makes sense.
Inspiration in /example/config.yaml and example/default.yaml,
as well as the keybindings documentation.
/example/screen.yaml could be a suitable location.

Best I can tell, all executables produce 0 as a Linux exit code, regardless how wrongly they were invoked. That's a problem, e.g. when attempting to run the gateway as a systemd.service.

Specific use case: storj-gateway.service runs gateway_xxx_yyy --config-dir does-not-exist. Systemd happily reports that everything is fine -- which of course it is not, but it cannot tell unless the exit co