Let AI laws stack

[Roomba]

On the topic of laws, I'd suggest adding a "high numbered laws take precedence in the case of conflict" base law (not even a law, just a state), which makes some things a touch easier on the AI with the inevitable conflicting laws. The reason for "higher" rather than "lower" is that it makes it possible to overwrite-by-adding if necessary.

Also going to have to say no to this, largely because it's been station policy that law order means nothing on Goon and I still have to argue the point with people once every other round. Suddenly reversing the policy on this would just confuse people, especially sporadic players who don't keep up with everything. You lose nothing with the current system - people can still follow the laws in numerical order if there's no explicit override order.