Lozza 1.6

Changes

• Use end game PSTs for move ordering.
• Check for illegal position by detecting 0 moves at root.
• Fix UCI "mate" score.
• More traditional extension/reduction arrangement.
• Only do futility if depth <= 5.

Usage

Runs in a web browser (or a web worker). There is no offline/UCI-GUI support yet; Node.js support arrived in 1.13.