I guess we could probably remove the top-level "Executing in dry-run mode" message, provided we say the same thing in the per-database message. However, the latter can be turned off with --quiet. Maybe we should consider disallowing --quiet and --dry-run.
--quiet does appear to be the sworn enemy of "tell me what you would have done if you were really gonna do it". So yeah, disallowing that combination would make sense.
