Version 1.6.2 Beta

This is a small release focusing on back-end parts of the game.

World generation has been made much more efficient - Pseudo-random generation is now done using simplex noise, rather than using MD5. This is a massive advantage as MD5 is a hashing algorithm, and so was not designed with performance as a primary concern. Simplex noise, however, is much faster, giving a massive decrease in the time it takes for a world to be generated.