Decrease MAX_HISTORY_VALUE to avoid saturation
Decrease MAX_HISTORY_VALUE to avoid saturation

Countermove history still not working well. This might help, to ensure
we never saturate?

Next attempt will be to adjust the moveiter strata so that we can return
an int here but still not intersect strata -- some annoying coupling in
that so trying this first.

jwatzman/nameless-chessbot,jwatzman/nameless-chessbot