Dynamical komi

komi-v0.1

Dynamically adjust "komi" (color planes) to keep winrate within a cer…

c_puct scaling and partial backup

Release notes at leela-zero#1435 (comment)

scaling c_puct according to winrate

• the linear version replaces c_puct by ( c_puct x winrate x 2 )
• the quadratic version replaces c_puct by ( c_puct x winrate x (1-winrate) x 4 )
• tested to support myLizzie

Pull request leela-zero#1435

(Note: this version will occasionally crash when used with multiple threads; use the latest release instead.)