Patch 8.1 update

Update:
Lowered building recruitment slot bonuses.

Update:
- Due to reports of AI not recruiting with multiple turn per year recruit times, I reworked recruitment. Now, all units are 1 turn to recruit but there is one less recruitment slot.
- Decreased attrition, increased siege times by 1.
- Various changes to improve compatibility with other mods.

Update: Fixed AI Food bonus for patch 7.

Patch 7 beta compatible.

Updated the AI build cost cap, hopefully they will build more advanced buildings. Let me know if it makes anything messed up.

Update 1.4

- Increased experience required for each rank. Agents x2, Generals x1.5
- Decreased cultural conversion bonuses of Buildings by 50%.
- Decreased building replenishment bonuses by 25%.
- Increased Cavalry campaign movement, now the same as the base game.
- Increased Agent and General movement so they don't slow down armies when embedded in them.
- Decreased Siege equipment movement, now reduced by 35%.
- Changed recruitment times for the cheaper medium units to be the same as light units.
- AI gets a food bonus based on difficulty level.