Fixed IPv4 compatibility with IPinfo databases
Fixed wrong root in MMDB tree parser, which caused failed IPv4 lookups in IPv6 databases that don't include IPv4-mapped IPv6 addresses (wrong since 1.0.0, closes #44.)
Fixed wrong root in MMDB tree parser, which caused failed IPv4 lookups in IPv6 databases that don't include IPv4-mapped IPv6 addresses (wrong since 1.0.0, closes #44.)