Chess engine: Willow 2.5.1

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Willow - UCI engines
A chess engine I am currently working on, written in C (WORK IN PROGRESS)
Compiled in Windows, works on BanksiaGUI with limited UCI support right now.

v.2.5.1.:
After some testing in slightly longer time controls:
-improved time management
-fixed TT replacement scheme (the old one was buggy and worked worse)

ELO improvement: about 50 ELO in a 100 game 5|5 test. However this version of willow takes about half the nodes to get to depth 15 on average, without changing anything in the search, so I feel safe releasing this as an improvement.




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