• Implemented a form of static null move pruning;
• Added PVS search at root nodes;
• Improved late move reduction;
• Implemented Pondering;
• Implemented basic passed pawn and king security evaluation;
• Other small improvements and refactoring;

Results:
Test results show an improvement of about 130 elo with pondering disabled.
The new testing framework requires 2400 games at TC 15"+0.3" for each functional change.

Includes statically linked PGO optimized windows binaries and Fauzi's opening book used for testing.

NOTES: Current version only works with bmi2-compliant Intel cpus, which means at least Haswell. I'm working to provide cross platform/architecture binaries.