- core: when restarting services, don't close fds (#1798162)
- unit: rework a bit how we keep the service fdstore from being destroyed during service restart (#1798162)
- tests: add basic journal test (#1798162)
- tests: add regression test for `systemctl restart systemd-journald` (#1798162)
- tests: add test that journald keeps fds over termination by signal (#1798162)

- unit: fix potential use of cgroup_path after free() when freeing unit (#1778083)

- core: exclude .slice units from "systemctl isolate" (#1751130)

- return error value on failure (#1729226)
- revert local changes made during backport of the test (#1729226)
- core/timer: Prevent timer looping when unit cannot start (#1729230)
- core: add a "Requires=" dependency between units and the slices they are located in (#1729228)
- core: rerun GC logic for a unit that loses a reference (#1729228)
- pid1: rename unit_check_gc to unit_may_gc (#1729228)
- pid1: include the source unit in UnitRef (#1729228)
- pid1: fix collection of cycles of units which reference one another (#1729228)
- pid1: free basic unit information at the very end, before freeing the unit (#1729228)
- pid1: properly remove references to the unit from gc queue during final cleanup (#1729228)
- service: relax PID file symlink chain checks a bit (#8133) (#1729414)
- path-util: fix more path_is_mount e792e890f fallout (#1279231)