WARNING: difficulty grows and can reach 11!
All previous xpmclient versions automatically switch off when work with difficulty 11 will be received!
You can follow 2 ways:
1. Manually edit config.txt when difficulty reach 10.99+
# Target Cunningham chain length, default = auto (adjust to difficulty)
target = "11";
# Sieve layers number, optimal value is target*2; default = auto (target*2)
width = "22";