message: contour.yml: bump up sixel_register_count default value.
diff: @@ -18,7 +18,7 @@ images:
  # Enable or disable sixel scrolling (SM/RM ?80 default)
  sixel_scrolling: true
  # Configures the maximum number of color registers available when rendering Sixel graphics.
  - sixel_register_count: 256
  + sixel_register_count: 4096
  # If enabled, the ANSI text cursor is placed at the position of the sixel graphics cursor after
  # image rendering, otherwise (if disabled) the cursor is placed underneath the image.
  sixel_cursor_conformance: true
  