* add --vacuum-xyz options to coredumpctl, matching those journalctl already has.
-* SuccessExitStatus= and friends should probably also accept symbolic exit
- codes names, i.e. error codes from the list maintained in exit-codes.[ch]
-
* introduce Ephemeral= unit file switch, that creates an ephemeral copy of all
files and directories that are left writable for a unit, and which are
removed after the unit goes down again. A bit like --ephemeral for