Halftones 0.7.0

New

• Vectorize flat edges: optionally trace flat spot-color plates into smooth vector outlines so diagonal and curved color boundaries aren't pixelated (staircased). A global default with a per-color override (smooth the flat masses, leave a fine line/hatch plate crisp) and a Rounding amount. Flat plates only; halftone plates are unaffected.
• Independent margins: a single linked margin, or independent Top/Bottom and Sides values.
• Background bleed as % of margin: the cutout-background bleed is now a percentage of the (largest) margin instead of a fixed inch value, so it scales with the layout and reaches the trim edge.
• Reorganized spot-color controls: grouped by workflow — Palette → Separation → Trapping & edges → Plates & stock → Preview. ("Smoothing" is now Despeckle"; vectorization controls live together.)

Fixed / improved

• Crop & alignment marks thickened (1.5pt) so they burn reliably on screen emulsion.
• Live color editing with vectorize + multiple layers no longer re-traces every plate on each picker tick (~10× faster).
• Smoothing no longer fattens line weight as you raise it.

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macOS (Apple Silicon), unsigned. On first launch, right-click the app → Open, or System Settings → Privacy & Security → Open Anyway. If you instead see "app is damaged," that's the browser-download quarantine flag — clear it with:
```
xattr -cr /Applications/Halftones.app
```