v0.5.9

• Edit Pixels - shift sprite pixels in any direction with boundary protection using arrow keys or on-screen buttons.
• Film Roll view for browsing animation frames in a filmstrip layout.
• Pixel grid overlay for precise sprite editing.
• Multi-frame selection in Film Roll via Ctrl+Click (toggle individual frames) and Ctrl+A (select all). Shift pixels on all selected frames at once with arrow keys. Selected frames highlighted with orange border.
• Bulk Editor expanded with missing properties (ground speed, light, minimap, offset, elevation, cloth, default action, lens help, market, writable) and version-dependent property visibility.
• Fixed _changed flag not reset after save, causing false "Save changes?" dialog.