Dynamic Complexity based on psqt
Adjust initiative score by psqt/2 instead of materialScore/2 which simplifies #2516
Passed STC
http://tests.stockfishchess.org/tests/view/5e2e667dab2d69d58394fc73
LLR: 2.94 (-2.94,2.94) {-1.50,0.50}
Total: 23198 W: 4506 L: 4353 D: 14339
Ptnml(0-2): 396, 2615, 5380, 2728, 418
Passed LTC
http://tests.stockfishchess.org/tests/view/5e2ed75cab2d69d58394fcbf
LLR: 2.94 (-2.94,2.94) {-1.50,0.50}
Total: 8519 W: 1179 L: 1062 D: 6278
Ptnml(0-2): 50, 775, 2472, 843, 74
closes https://github.com/official-stockfish/Stockfish/pull/2522
Bench: 4684459