1.21 Improvements

A good amount of things were adjusted:

-A different type of air was added for underground areas to make it not render unless it is witnessed by the player.

-Other small rendering fixes (SpecificBlock Function shortened).

-Almanac box color was fixed.

-Minimum and default world sizes were increased due to better performance.

-Red dungeon given functionality through a new portal boss fighting system that allows the player to fight the new Thug Boss.

-Death stats now display if the player dies.

-High score added to intro screen.