Even in last version there were sometimes problems with shadows: Now it’s fixed (probably). I also added dawn and dusk, so the day doesn’t change into night too suddenly.
LiquidHot made a better background for inventory. Basic inventory is in nightly version, but cuboid, rails and creative mode are missing, so it’s better to stay with the last version.
Server now sends whole data\public folder to clients. So it’s possible to change not only terrain graphics, but also sky, player model, sounds, or make new blocks (blocks.csv file). The future items, monsters, recipes will be customizable too. Editing blocks: