Update version

go.mod

@@ -0,0 +1,3 @@
+module github.com/ip2location/ip2location-go
+
+go 1.14

ip2location.go

@@ -130,7 +130,7 @@ var mobilebrand_position = [25]uint8{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 var elevation_position = [25]uint8{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 11, 19, 0, 19}
 var usagetype_position = [25]uint8{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12, 20}
 
-const api_version string = "8.3.0"
+const api_version string = "8.4.0"
 
 var max_ipv4_range = big.NewInt(4294967295)
 var max_ipv6_range = big.NewInt(0)
@@ -403,83 +403,6 @@ func OpenDBWithReader(reader DBReader) (*DB, error) {
 
 	dbt := db.meta.databasetype
 
-	// since both IPv4 and IPv6 use 4 bytes for the below columns, can just do it once here
-	// if country_position[dbt] != 0 {
-	// country_position_offset = uint32(country_position[dbt] - 1) << 2
-	// country_enabled = true
-	// }
-	// if region_position[dbt] != 0 {
-	// region_position_offset = uint32(region_position[dbt] - 1) << 2
-	// region_enabled = true
-	// }
-	// if city_position[dbt] != 0 {
-	// city_position_offset = uint32(city_position[dbt] - 1) << 2
-	// city_enabled = true
-	// }
-	// if isp_position[dbt] != 0 {
-	// isp_position_offset = uint32(isp_position[dbt] - 1) << 2
-	// isp_enabled = true
-	// }
-	// if domain_position[dbt] != 0 {
-	// domain_position_offset = uint32(domain_position[dbt] - 1) << 2
-	// domain_enabled = true
-	// }
-	// if zipcode_position[dbt] != 0 {
-	// zipcode_position_offset = uint32(zipcode_position[dbt] - 1) << 2
-	// zipcode_enabled = true
-	// }
-	// if latitude_position[dbt] != 0 {
-	// latitude_position_offset = uint32(latitude_position[dbt] - 1) << 2
-	// latitude_enabled = true
-	// }
-	// if longitude_position[dbt] != 0 {
-	// longitude_position_offset = uint32(longitude_position[dbt] - 1) << 2
-	// longitude_enabled = true
-	// }
-	// if timezone_position[dbt] != 0 {
-	// timezone_position_offset = uint32(timezone_position[dbt] - 1) << 2
-	// timezone_enabled = true
-	// }
-	// if netspeed_position[dbt] != 0 {
-	// netspeed_position_offset = uint32(netspeed_position[dbt] - 1) << 2
-	// netspeed_enabled = true
-	// }
-	// if iddcode_position[dbt] != 0 {
-	// iddcode_position_offset = uint32(iddcode_position[dbt] - 1) << 2
-	// iddcode_enabled = true
-	// }
-	// if areacode_position[dbt] != 0 {
-	// areacode_position_offset = uint32(areacode_position[dbt] - 1) << 2
-	// areacode_enabled = true
-	// }
-	// if weatherstationcode_position[dbt] != 0 {
-	// weatherstationcode_position_offset = uint32(weatherstationcode_position[dbt] - 1) << 2
-	// weatherstationcode_enabled = true
-	// }
-	// if weatherstationname_position[dbt] != 0 {
-	// weatherstationname_position_offset = uint32(weatherstationname_position[dbt] - 1) << 2
-	// weatherstationname_enabled = true
-	// }
-	// if mcc_position[dbt] != 0 {
-	// mcc_position_offset = uint32(mcc_position[dbt] - 1) << 2
-	// mcc_enabled = true
-	// }
-	// if mnc_position[dbt] != 0 {
-	// mnc_position_offset = uint32(mnc_position[dbt] - 1) << 2
-	// mnc_enabled = true
-	// }
-	// if mobilebrand_position[dbt] != 0 {
-	// mobilebrand_position_offset = uint32(mobilebrand_position[dbt] - 1) << 2
-	// mobilebrand_enabled = true
-	// }
-	// if elevation_position[dbt] != 0 {
-	// elevation_position_offset = uint32(elevation_position[dbt] - 1) << 2
-	// elevation_enabled = true
-	// }
-	// if usagetype_position[dbt] != 0 {
-	// usagetype_position_offset = uint32(usagetype_position[dbt] - 1) << 2
-	// usagetype_enabled = true
-	// }
 	if country_position[dbt] != 0 {
 		db.country_position_offset = uint32(country_position[dbt]-2) << 2
 		db.country_enabled = true