add an option about whether to show equip animations
little enhancement of YiShi AI
slash with heavy damage for AI
do not use fire attack or duel to Cao Cao who is not weak
little adjustment of defense of Rende
-- by haveatry823
use Slash more frequently in MingCe
adjust card need in AI by haveatry823
do not invoke LieRen with only hand card Jink or Peach (by lrl026)
cooperation between RenDe and EnYuan by haveatry823