Support huge worlds

[1j01]

• try making a proof of concept for an infinite or huge world
  • controls for resizing regions of the world without changing every serialized x coordinate to the right of the resizing point
  • transitions between biomes would be an important target for editing, so it might actually make sense when dividing world sections to divide it in a less interesting area that is centered in one of the biomes, so if the sections had names they would be like "grasslands to mountains", "mountains to hills", "hills to swamp"
  • simulating groups of entities that are offscreen in web workers, pairing/pooling entities that need to interact?