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Chess engine: Raven 1.10 (Windows and Linux)

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Raven is a chess engine written in C that uses the UCI protocol.
Rating JCER=2705,  Author: Steve Griffin

New Features
Search:
No null move verification when game phase <= 70.
Increase reduction if sort score = 0.
Decrease reduction if sort sore > 0.
Only futility prune when sort score = 0.
Limit LMR of pawn moves to one ply.

Time management:
Less aggressive early exit from search due to low time remaining (changed from 4 * previous search time to 2 * previous search time).
Changed from clock() to tp.tv_sec. (Thanks to Stash author M Houppin for this change).

Binaries are available for Windows and Linux (only tested on Ubuntu).
Raven 1.10 download

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