Add Stun skill (in advance).
Add Activation Modifier into SkillSpec.
Hardcode cards with id 4000+ as assaults.
Fix bugs:
* Jam/Chaos/Weaken on Attacked and Weaken on Death should only target such Assault cards that neither have attacked nor are attacking.
* Jam/Chaos on Death should only target such Assault cards that have not attacked.
* Chaosed Jam/Chaos/Weaken should be able to target such Assault cards that have attacked.
* Cleanse should target immobilized/stunned Assault cards.