#62 - ASN is still empty when databases have values

[nhi-vanye]

Fixed lookup of "trait" records" (i.e. ASN, ASO, Connection etc)

Also added "user_type" which is the type (i.e. Hosting, Corporate)

This has only been testes with a full commercial binary MMDB database from db-ip.com.

> ip <- "43.131.30.179"
> geo <- rgeolocate::maxmind(
      ip,
      geoip_file,
      fields = c(
          "continent_name",
          "country_code",
          "country_name",
          "region_name",
          "city_name",
          "latitude",
          "longitude",
          "timezone",
          "postcode",
          "isp",
          "organization",
          "asn",
          "aso",
          "connection",
          "user_type"
      )
 )
> geo
  continent_name country_code country_name region_name         city_name latitude
1         Europe           DE      Germany       Hesse Frankfurt am Main  50.1109
  longitude      timezone postcode              isp organization    asn
1   8.68213 Europe/Berlin    60313 Aceville Pte.ltd         <NA> 132203
                                                aso connection user_type
1 Shenzhen Tencent Computer Systems Company Limited  Corporate   hosting