many improvements to tilemaps, as LL uses those nearly exclusively for all zones

game/engines/default/engine/algorithms/MST.lua

game/engines/default/engine/generator/map/MapScript.lua

game/engines/default/engine/tilemaps/Rooms.lua

game/engines/default/engine/tilemaps/Static.lua

game/engines/default/engine/tilemaps/Tilemap.lua

game/modules/tome/data/general/events/glimmerstone.lua

.../modules/tome/data/mapscripts/lib/connect_rooms_multi.lua

game/modules/tome/data/mapscripts/lib/random_room.lua

game/modules/tome/data/rooms/pit.lua

...odules/tome/data/zones/grushnak-pride/mapscripts/last.lua

...odules/tome/data/zones/grushnak-pride/mapscripts/main.lua