New “Fade” separator style: blend images together with a soft gradient instead of a hard divider, with an adjustable fade width (split, grid, panorama and podium layouts).
Drag handles on the canvas: reposition dividers, split points, the floating circle, podium columns/heights and the panorama ratio directly by dragging, with on-canvas grips and resize cursors (mouse and touch).
Cleaner rendering: removed a faint 1px seam that could appear along polygon edges.
Updated French translation and POT for the new options.
