Chess engine: Flounder 0.5.0.2

Flounder - an attempt at a Chess Engine in F#, mainly a conversion from the excellent [StockNemo](https://github.com/TheBlackPlague/StockNemo).

Rating Chess Engines Diary CEDR=3210

Next stage is to re-factor the code so that it is more standard F#, without losing any performance.

v.0.5.0.2:

Fix for losing on time where unusual parameters passed in. In particular previous code could not handle negative time for opponent.

Individual statistics: Flounder 0.5.0.0

Caissa 1.8	1.5/14	-11	14 Games
Tenax 0.7.9	3/12	-6	12 Games
Nippolit	6/10	+2	10 Games
SFT 26.04.2023	0.5/10	-9	10 Games
Critter 1.6a	4/8	+0	8 Games
Roc 2.0.0	3.5/8	-1	8 Games
Polyfish 230426	0/8	-8	8 Games
Mantissa 3.7.2	3/7	-1	7 Games
Mess 0.2.0	6/6	+6	6 Games
Coiled 1.2	5.5/6	+5	6 Games
Polaris 1.5.0	5.5/6	+5	6 Games
Zangdar 2.15.03	5.5/6	+5	6 Games
Svart 4	4.5/6	+3	6 Games
Rice 5.0.0	3/6	+0	6 Games
Midnight 6	2.5/5	+0	5 Games
SugaR AI ICCF SE	0.5/5	-4	5 Games
Cdrill 2000	4/4	+4	4 Games
Queen 4.05	4/4	+4	4 Games
Peacekeeper 1.40	4/4	+4	4 Games
Apotheosis 3.0.0	4/4	+4	4 Games
Bagatur 3.7c	3.5/4	+3	4 Games

 Chess engine: Flounder 0.5.0.2 download