Insane is not deterministic by default (add seed for random)

Heya,

Would it be an option to use a seed for the fudge factor and for all other random parts of insane? It would be really nice if it would be deterministic. I do not see any reason why it is not (if I am wrong I stand corrected). Then we could make the seed an optional input, so people have the option to change it.

Cheers