Clovis III dev.5d50 JA - new version chess engine

Clovis - UCI chess engine.

Rating Chess Engines Diary CEDR=2885

Named after the first king of the Franks and the paleoamerican mammoth slayers, Clovis is a powerful UCI chess engine written in C++. It is a successor to [Hopper Chess](https://github.com/jonathanmcdermid/Hopper-Chess-Engine) in that it follows standard convention more closely. 

v.III:

Clovis is born again!

implemented gradient descent tuner

disabled drawishness and some other evaluation functions until they are integrated into tuner

added some params to evaluation (candidate passer, rook on seventh)

vertically mirrored some PSQTs

Expecting a ~50 Elo improvement from Clovis II!

Clovis III vs other engines:

Critter 1.6a	3/21	-15	21 Games
Pawn 1.0	0/15	-15	15 Games
Carp 2.0.0	3.5/13	-6	13 Games
Flounder 0.4.0.0	2.5/13	-8	13 Games
Captain 4.0	11/11	+11	11 Games
Jangine 2023-03-31	10.5/11	+10	11 Games
Wasp 6.50	0.5/11	-10	11 Games
Knightx 3.7b	8.5/10	+7	10 Games
The Baron 3.45	1.5/10	-7	10 Games
MrBob 1.2.0	0/9	-9	9 Games
Apotheosis 4.0.1	3.5/8	-1	8 Games
Midnight 6	2/8	-4	8 Games
Arasan 23.5	1/8	-6	8 Games
BlackCore 6.0	0.5/8	-7	8 Games
Queen 4.05	6.5/7	+6	7 Games
Fornax 4.0	6/7	+5	7 Games
Apotheosis v1	6/6	+6	6 Games
Cdrill 2000	6/6	+6	6 Games
Mess 0.3.0	5/6	+4	6 Games
Seawall 20231015	3/6	+0	6 Games
Topple 0.8.1	2/6	-2	6 Games

Jim Ablett compiles:

Clovis III dev.5d50 JA download

github:https://github.com/jonathanmcdermid/Clovis/releases/tag/III