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New chess engine: Horsie 1.1



UCI chess engine: Horsie
Author: Liam McGuire (USA)  Rating Chess Engines Diary CEDR=3692


v.1.1:
Contains numerous cleanups + refactorings, various search patches, hashfull/WDL support, and uses clang instead of gcc.

Picking a binary:
Start with v4, and move down until it no longer crashes.

v4 enables Avx512,
v3 enables Avx256,
v2 is a fallback for older CPU's
STC vs Horsie 1.0:
Elo   | 32.41 +- 6.27 (95%)
Conf  | 8.0+0.08s Threads=1 Hash=32MB
Games | N: 3000 W: 803 L: 524 D: 1673
Penta | [6, 236, 737, 515, 6]
https://somelizard.pythonanywhere.com/test/2576/

LTC:
Elo   | 29.37 +- 5.95 (95%)
Conf  | 60.0+0.60s Threads=1 Hash=128MB
Games | N: 3000 W: 809 L: 556 D: 1635
Penta | [1, 229, 786, 484, 0]



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