Add version history to the editor

Every document now keeps a history of past states, browsable from a new panel styled after Time Machine: a stack of snapshot cards you scrub through, plus a timeline rail grouped by day.

Open it from the history icon next to undo/redo, or with ⌘⌥H. Restore a version in place (your current state is kept as its own snapshot first, so it’s never destructive) or as a new copy. Save a named milestone anytime with ⌘⌥S so it’s easy to find later; unnamed auto-snapshots are taken periodically as you work and thinned over time.

This is a macOSicons+ feature (Plus or Pro). Free accounts see an upgrade prompt when they try to open it, unless they still have versions saved from a previous paid period.