removed:
sub_attacker, sub_attack_target: Changing attack target is done by functions
attack_cancelable: It is removed since it will interrupt attack-announce related parts.
Duel.ReplaceAttacker(): No longer used.

EFFECT_RISE_TO_FULL_HEIGHT: It is used by "Rise to Full Height".
EFFECT_ONLY_ATTACK_MONSTER: The opponent monsters can only attack monster X.
EFFECT_ONLY_BE_ATTACKED: The targets of
EFFECT_RISE_TO_FULL_HEIGHT/EFFECT_ONLY_ATTACK_MONSTER.
EFFECT_MUST_ATTACK_MONSTER: If the opponent monsters attack, they can only attack monster X.
EFFECT_MUST_BE_ATTACKED: The targets of EFFECT_MUST_ATTACK_MONSTER.
EFFECT_MUST_ATTACK: The opponent monsters must attack.

Duel.ChangeAttackTarget(): Now it will change the attacker and raise events.
Duel.HintSelection(): Now it will not move cards.

attack_state_count/announce_count:
1. If no target exists, it increases after attack announce.
2. If there are targets, it increases after traget selection.