3.1.0

Added

• Golden Days option: seagrass no longer tears across the screen, and
  hanging mangrove propagules keep Golden Days' look.
• Golden Days 2D Candles option: billboards Golden Days' flat candles, each
  one on its own.

3.0.0

Added

• Cloud Distance option: match your video setting so clouds fade out like
  vanilla (1.21.6+).

Changed

• 1.21.11 is now tested before every release, alongside 1.20.1 and 1.21.1.
• Fog Start Scale defaults to 1.00, so fog starts where vanilla's does.
• Clouds and fog follow vanilla on each Minecraft version (curve, cylinder
  distance, render-distance fog, cloud fade).

Fixed

• Wall torches no longer stretch sideways on 1.21.11 and 26.x.
• Clouds on 1.21.11 and 26.x were too transparent.
• Stars and the sunset glow are never fogged, like vanilla.
• The void below the horizon is fogged like vanilla on 1.21.6+.
• Seagrass and tall seagrass were invisible.
• Enchantment glint and lightning fade out with distance and glint ignores
  light, like vanilla.
• Glowing eyes fade out with distance before 1.21.2, like vanilla.
• The world border is no longer fogged.
• Enchantment glint on held, dropped and worn items on Minecraft 26.3.

Removed

• Fog Density Scale: vanilla fog is never exponential.

2.2.0

Changed

• Ambient Floor defaults to 0.00: darkness now matches vanilla.
• License is now AGPL-3.0-or-later.

2.1.2

Added

• Billy Boarding: potted pale oak sapling, eyeblossoms, golden dandelion and
  poplar sapling (1.21.4+, with the matching Billy Boarding).
• Billboarded pale hanging moss (1.21.4+), golden dandelion (26.1+), red
  shrub and poplar sapling (26.3+).

2.1.1

Added

• Billy Boarding: potted cactus.
• Billy Boarding: wall bells and pitcher crops.

Fixed

• Billy Boarding no longer mangles candles and sea pickles, which it has no
  models for yet.
• Billy Boarding potted plants no longer z-fight.
• Billy Boarding: cakes, candle cakes, anvils and bells no longer show black
  where their sprites are transparent.
• Falling Billy Boarding anvils and falling pointed dripstone now face the
  camera.

2.1.0

Added

• Palettes from Wolfenstein 3D, Doom, Heretic, Hexen, Quake, Duke Nukem 3D
  and Daggerfall, and the Mac OS system palette.

2.0.0

Added

• A fixed 256-color palette, now the default: 16 Minecraft hues in 16 shades
  each, like a DOS game's own palette.
• The stock VGA palette, as an option.
• Colormap lighting (default on): textures use only palette colors and
  shading steps down each color's ramp, like Doom and Quake.

Changed

• Texture mapping defaults to Quake-style subdivision: perspective-correct
  every 16 pixels and linear in between, a subtle wobble instead of heavy
  warping. Full affine and perspective-correct are options (Texture Mapping).
• Textures pick their mipmap for the 320×200 output, so distant surfaces
  shimmer much less.
• Rain and particles use the generic textured program; rain now wobbles like
  other geometry.
• Fog and texture mapping take the pixel position from the vertex shader
  instead of reconstructing it per pixel. Same look, less work.
• Viewmodel Dithering is now a strength slider; 0 turns it off.
• The option menu is trimmed (see Removed). Saved settings for removed or
  renamed options reset to their defaults.

Fixed

• Surfaces seen at a very steep angle no longer smear, or show other blocks'
  textures inside them or as lines along their edges, with subdivided
  mapping.
• 1.21.x flora (bush, eyeblossoms, dry grass…) billboards again; it broke in 1.0.3.
• Copper Age chains and lanterns now actually billboard.
• Stained glass, ice and other translucents no longer darken at night; only water does.

Removed

• Palette Mode and Bypass options, replaced by Palette (Off, Ramp, VGA,
  RGB332, 6x6x6).
• Affine Mapping, Near Distance and Fade Range options (replaced by Texture
  Mapping).
• Fog Tuning toggle, Start/End Offset and Minimum Range options. Fog keeps
  its Start, End and Density scales; 1.00 is vanilla.
• Dither Strength option (merged into Viewmodel Dithering).
• OptiFine from the listed loaders. It was never supported.
• Programs that duplicated their Iris fallback, and an unused one. No visual change.