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Chess engine: Hopper Engine 1.2

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Hopper Engine - UCI chess engine
Author: Jonathan McDermid 

v.1.2
Largest changes since v1.0 are functioning pawn hash tables, a more sophisticated evaluation function, and time control. The engine should be stronger than it currently is with the features that are already implemented, so future versions will likely contain less new features and more refined versions of current ones.

Current Features:
negamax algorithm
forsyth–edwards notation
material evaluation
mobility evaluation
alpha-beta pruning
iterative deepening
principle variations
transposition tables
pawn hash table
zobrist keys
null moves
zugswang detection
quiescent search
dynamic aspiration windows
pinned piece detection
double check detection
threatened squares
killer moves
perft
principal variation search
static exchange evaluation


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