Features:
+* cgroups: figure out if we can somehow communicate in a cleaner way whether a
+ elogind instance not running in the cgroup root shall or shall not manage the
+ attributes of its top-level cgroup. Currently it assumes it manages all, but
+ then might get EPERM due to permission porblems/userns, which is OK, but this
+ should be revisited to make clearer and also work if the payload elogind runs
+ with full privs and without userns.
+
+* cgroups: use inotify to get notified when somebody else modifies cgroups
+ owned by us, then log a friendly warning.
+
+* doc: document NTP env var timedated groks in doc/ENVIRONMENT.md.
+
* Fix DECIMAL_STR_MAX or DECIMAL_STR_WIDTH. One includes a trailing NUL, the
other doesn't. What a desaster. Probably to exclude it. Also
DECIMAL_STR_WIDTH should probably add an extra "-" into account for negative