Server-Side mod for the ProtoSlim Minecraft server. Changes world border dimensions, back-ports shulker spawning and adds elytra recipe.
Hard codes the world border to a non-square 60 million x 16 blocks centered on 0/0. Adds special logic to sync the (half) world border to vanilla clients).
Back port of the 1.17+ feature. A shulker hit by a shulker bullet has a chance to spawn another shulker.
Elytras can be crafted with an end rod, a nether start and 4 phantom membranes.