Smallbrain v1.1

This version is a bit stronger than my previous release, thus a small release.

Changes

Most notable changes were adjustment to move scoring, selection sort only for the next move,
better null move pruning conditions as well as better lmr reduction and some other small speedups.

Elo test against v1.0

ELO   | 76.35 +- 27.19 (95%)
CONF  | 60.0+0.60s Threads=1 Hash=64MB
GAMES | N: 504 W: 244 L: 135 D: 125