- Type Change to GeoIP2 Metro Code Field

In previous GeoIP2 databases, the metro_code was incorrectly represented as a string. This has been corrected and now metro_code is internally represented as an uint16. This should not affect users of the official Java, .NET, Perl, or PHP GeoIP2 APIs. The Python API will now return an integer rather than a string for metro_code. Users of libmaxminddb or third-party APIs may be affected.