v0.4.3

Added

• A Settings window (⌘,) holding the update preference, which used to be a
  menu item.
• The window title names the live scene, in the title bar and the Window menu.

Changed

• Scene tiles are buttons: focusable, activatable from the keyboard, and
  announced by VoiceOver with the scene, its camera, its zoom and its shortcut.
  They were a picture beside two labels that happened to react to a click.
• Deleting a scene asks first and is marked as destructive. It takes the
  framing, corrections, overlay and lighting with it, and cannot be undone.

Fixed

• Icon-only controls carry names for VoiceOver: the scene-lighting toggle used
  to be announced as "theatermasks", and the light menu, the refresh button and
  the zoom stepper had no name at all.