Versions and rollback
Every publish is a restore point.
Lontly snapshots your content on every publish, and keeps the most recent 20 versions. The very first publish also snapshots the original template state, so you can always get back to where you started.
Restoring
Open the versions list, preview any entry, and restore it. Restoring is not destructive — it creates a new version from the old content, so restoring the wrong one is itself undoable.