Fixes
- Undo/Redo now work for merges: ⌘Z after a Copy to Right/Left undoes the merge (and ⇧⌘Z redoes), regardless of which pane has focus — the undo history is unified across panes, always undoing the most recent edit wherever it happened. Differences refresh instantly, no F5 needed.
Install: open the dmg and drag to Applications (replace the previous version).