Train with a mix of Berserk and Koivisto data

[jhonnold]

Bench: 5244990

STC

ELO   | 5.28 +- 3.49 (95%)
SPRT  | 10.0+0.10s Threads=1 Hash=8MB
LLR   | 2.95 (-2.94, 2.94) [0.00, 3.00]
GAMES | N: 19008 W: 4892 L: 4603 D: 9513

LTC

ELO   | 6.14 +- 4.20 (95%)
SPRT  | 60.0+0.60s Threads=1 Hash=64MB
LLR   | 2.36 (-2.94, 2.94) [0.00, 3.00]
GAMES | N: 12160 W: 2925 L: 2710 D: 6525