Updated with comprehensive improvements to unit stats, combat rules, morale tweaks, etc. As well as some improvements to battle AI and unit cohesion in combat (less blobbing and more uniform)

- Reduced bodyguard chariot unit sizes to those of regular chariot units
- Reduced bodyguard chariot charge bonus values
- Reduced bodyguard chariots melee attack by 3
- Reduced collision damage modifier from 1.7 to 1.5
- Reduced melee defense of all chariot units by 2-4
- Increased spear and 2h spear bonus vs large
- Misc unit stat balancing