ZOrbit 0.9.0

Added

• A tag band on the ring. ring.tag_band (none, hairline, narrow, medium or wide, default medium)
  draws a strip through the slot centres, each slot's stretch in its tag colour and a faint grey one for an
  untagged slot. A ring with no tagged slots has no band. ring.tag_band_opacity (0 to 1, default 0.45) sets
  how solid it is. The band does not depend on tag_colors. Slot colours are now dropped entirely only when
  both tag_colors and tag_band are none.
• Opacity for the glow and the tint: ring.tag_glow_opacity (default 0.4) and ring.tag_tint_opacity (default
  0.3), both 0 to 1.
• Tint style and blend. ring.tag_tint_style (flat or gradient, default gradient, which is stronger
  towards the rim) and ring.tag_tint_blend (multiply or overlay, default multiply).
• A reworked Settings > Tag colours card with three groups, Icon tint, Glow and Band, each with
  a switch. The tint and glow switches together set tag_colors, and the band switch sets tag_band.
  Opacities show as percentages, and controls under a switch that is off are dimmed. The preview beside them
  shows the current menu if it has a tagged brush, and otherwise a sample ring of your brushes coloured with
  your tags.

Changed

• tint now lays the tag colour over the brush icon, with a rim in the same colour, instead of only colouring
  the disc behind the icon. The old disc tint is gone. By default it multiplies at 0.3 and is stronger towards
  the rim, so tagged slots read more clearly.
• The tag band is on by default. Set ring.tag_band to none to turn it off.