Revert "Decrease MAX_HISTORY_VALUE to avoid saturation"
Revert "Decrease MAX_HISTORY_VALUE to avoid saturation"

This itself is neutral to negative -- test of a revert:

ELO   | 2.69 +- 3.66 (95%)
SPRT  | 10.0+0.10s Threads=1 Hash=64MB
LLR   | 0.61 (-2.94, 2.94) [0.00, 5.00]
GAMES | N: 22632 W: 7492 L: 7317 D: 7823

But more importantly it still doesn't help countermoves:

ELO   | -7.55 +- 7.45 (95%)
SPRT  | 10.0+0.10s Threads=1 Hash=64MB
LLR   | -2.96 (-2.94, 2.94) [0.00, 5.00]
GAMES | N: 5432 W: 1707 L: 1825 D: 1900

This reverts commit 150cb9d952950c8faec53239c8cc5d6e09458ba6.

jwatzman/nameless-chessbot,jwatzman/nameless-chessbot