* introduce high-level settings for RT budget, swappiness
* wiki: document new bus APIs of PID 1 (transient units, Reloading signal)
-* review: scope units, slice units, pid1, machinectl, libsystem-login, pam_system, systemctl commands
* Send SIGHUP and SIGTERM in session scopes
Features:
+* journalctl: instead --after-cursor= maybe have a --cursor=XYZ+1 syntax?
+
* given that logind/machined now let PID 1 do all nasty work we can
probably reduce the capability set they retain substantially.