New

• Added support for Minecraft 26.3.
• A heads-up before hosting. If the world was last played on a different Minecraft version, or with mods you don't have installed, you get one screen that lists what changed before anything opens. Hosting on a newer version updates the world for good (friends still on the old version can't host it until they update); hosting on an older version can break parts of it; a missing mod takes its blocks and items out of the world. You decide: "Host anyway" or "Cancel". Hosting on an older Minecraft used to be refused outright; now it's your call.

Fixed

• On 26.x, cancelling hosting at the wrong moment and hosting again could leave the game stuck on the loading screen until you restarted it.
• When Minecraft itself asks something before opening the world (for example "back up this world?" for a world from another version), pressing Cancel now takes you back to SharedWorld instead of leaving hosting half started.
• The button you just clicked no longer stays outlined after a step changes (most visible in the create world screens on 26.x).