Add player commands as trigger.

Heh, I was waiting for someone to ask this :-) Not at all related to drops and probably not the best way to deal with custom commands (check out command helper) but some people might create interesting stuff this way.

Shouldn't be too hard to add as a trigger, will consider it after 3.0.

...why? It has nothing to do with drops, why would you add this feature. (Actually, I don't even know what this feature is.)