AI players may now use a Great General in early rushes on higher difficulties.

Allow Alexander and Darius to consider Hoplites and Immortals for offensive roles in early game.

Allow the AI to consider Pikeman units for offensive roles when they can't build Swordsman or Longswordsman.

Rebalanced AI flavors and strategies for unit training to improve AI army composition and build choices.

Particularly useful for bribing a hostile AI.

Track trades between players and allow that to positively influence relationships (the better the deal for the AI, the stronger the modifier).

AI remembers if you fought against a common foe (positive modifier, decays over time, based on damage done to the common foe).

AI remembers if you satisfied one of their requests (positive modifier, decays over time, based on value of items granted).

End declaration of friendship as soon as war is declared (so can't later get a notification that it has expired).

AI now recognizes a player that captured their capital for a permanent diplomatic penalty.

AI now remembers when it has been nuked, for a permanent diplomatic penalty.

Made backstab routine more transparent (the dialog will clearly state that they are backstabbing you).

Civ 5 production bug