Adds a system for range and movement to the 'turnbattle' contrib. This is based on the abstract movement and positioning system I made for 'The World of Cool Battles', my learning project - fighters' absolute positions are not tracked, only their relative distance to each other and other objects. Commands for movement as well as distinction between melee and ranged attacks are included.
Adds a new module, 'tb_equip', an implementation of the 'turnbattle' system that includes weapons and armor, which can be wielded and donned to modify attack damage and accuracy.
Moves the basic turnbattle module to a new module file in a new 'turnbattle' subfolder. Also fixes a minor bug where the first character in the turn order was not being initialized properly at the start of a fight.
