Faithful port of mrdiff 0.2.1. Pick a client folder, capture master, switch branch in your terminal, capture release, download a per-slug xlsx that shows exactly what changed.
mrdiff reads whatever files are on disk right now. Capture master first, then git checkout release in your terminal, then capture release.
Emits a multi-sheet xlsx: Summary, Changed (per-slug what-changed detail), Added, Removed, Diff lines.