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Chess engine: Flounder 0.5.0.2

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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 1.81.5/14-1114 Games
Tenax 0.7.93/12-612 Games
Nippolit6/10+210 Games
SFT 26.04.20230.5/10-910 Games
Critter 1.6a4/8+08 Games
Roc 2.0.03.5/8-18 Games
Polyfish 2304260/8-88 Games
Mantissa 3.7.23/7-17 Games
Mess 0.2.06/6+66 Games
Coiled 1.25.5/6+56 Games
Polaris 1.5.05.5/6+56 Games
Zangdar 2.15.035.5/6+56 Games
Svart 44.5/6+36 Games
Rice 5.0.03/6+06 Games
Midnight 62.5/5+05 Games
SugaR AI ICCF SE0.5/5-45 Games
Cdrill 20004/4+44 Games
Queen 4.054/4+44 Games
Peacekeeper 1.404/4+44 Games
Apotheosis 3.0.04/4+44 Games
Bagatur 3.7c3.5/4+34 Games


 Chess engine: Flounder 0.5.0.2 download

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