LocateNext 1.0.0

Initial release.

• Pick a mod with /locatenext mod <modid> or the \ menu, then walk its structures with the
  arrow keys: left/right across the mod's structure list, up/down through instances of the one
  you're on.
• Fresh-only by default, so every search lands on a structure nobody has been sent to before.
• Auto-dimension: finds the dimension whose biome source accepts a structure, scales your
  coordinates across the portal ratio, and teleports you there.
• Reports distance, bearing and search time per jump; coordinates are click-to-copy.
• /locatenext sweep surveys every structure in a mod and reports which ones won't place.
• Selection, cursor, settings and instance history are saved into the world.
• Mod Menu's config button opens the picker.