Chess engine: Motor 0.3.0

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Motor - UCI chess engine written in C++ 17 with (768 -> 32) x 2 -> 1 NNUE trained with
Currently requires Clang or GCC/MinGW compiler.
Rating Chess Engines Diary CEDR=2786

Engine contains legal movegen with [kidergarten bitboards](https://github.com/martinnovaak/motor/blob/main/chess_board/slider_attacks/kindergarten.md).

v.0.3.0:
New network size: (768 -> 256) x 2 -> 1
History gravity + 1-ply conthist
New LMR changes
Improving boolean

Fixed movegen bug (enpassant with double discovery check).
Fixed search in max depth.

Motor 0.3.0 download


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