Optimise NNUE accumulator updates #299
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Do all updates at once rather than each time
AddPieceNNUE,MovePieceNNUEorClearPieceNNUEis called.Credit is shared with @connormcmonigle (Seer author) who was the person who introduced this idea to me.
ELO | 8.19 +- 4.54 (95%)
SPRT | 8.0+0.08s Threads=1 Hash=16MB
LLR | 2.90 (-2.25, 2.89) [0.00, 3.00]
GAMES | N: 10816 W: 2730 L: 2475 D: 5611
https://chess.swehosting.se/test/5287/
Bench: 7592451