With v0.1.1 you can now make maps ridiculously large in the map editor and not make the game crash. 

Changes:
~ Map is now only tiled around your position. This means that there is less data being used for the visual side of things, but has a slight performance decrease each time the game re-tiles the map around your position. Also allows for the larger maps that I mentioned earlier. 

Fixes:
> You now spawn at a random spawn block when you join a game, instead of just spawning in the middle of the map.