Features:
+* add a concept of RemainAfterExit= to scope units
+
+* add journal vacuum by max number of files
+
+* add a new command "systemctl revert" or so, that removes all dropin
+ snippets in /run and /etc, and all unit files with counterparts in
+ /usr, and thus undoes what "systemctl set-property" and "systemctl
+ edit" create. Maybe even add "systemctl revert -a" to do this for
+ all units.
+
* sd-event: maybe add support for inotify events
* PID 1 should send out sd_notify("WATCHDOG=1") messages (for usage in the --user mode, and when run via nspawn)
* install: include generator dirs in unit file search paths
-* stop using off_t, it's a crazy type. Use uint64_t instead.
-
* logind: follow PropertiesChanged state more closely, to deal with quick logouts and relogins
* invent a better systemd-run scheme for naming scopes, that works with remoting