Lut generation and schema search

[srikanth-iyer]

added schema search rules, sample automata rules, tests, input symmetry for anni_gen in BooleanNode among others.

@fcphysics if you have time, i'll be happy to go through the changes with you. Please let me know if you can review these changes. I need them on the casci repo because some of the functions will be used in the noisy cellular automata GA.

@jcrozum also adding you here. I'm assuming that you're busy settling in, but in case you have time to check the code, please let me know. I'd love your input.

And sorry for the big pull request.

[srikanth-iyer]

@fcphysics Can you have a look at this pull request please? I've added Ke for anni_gen rules as well in this