Ji-Ping Shen

Also a log can be matched by multiple rules which results in multiple versions of it getting emitted. We were using config like: ``` ... tag drop ... ... tag...

@doovemax it now supports json marshaling and unmarshaling, see https://github.com/relex/aini/blob/master/marshal_test.go due to references, only the entire inventory can be marshalled, not individual groups or hosts.

We've been troubled by this for a long time. But journalctl's filtering looks like it [expands](https://github.com/systemd/systemd/blob/main/src/journal/journalctl-filter.c) wildcard to static unit names at startup, and probably won't work for newly-added services...