• The maxminddb extension now returns a string when a uint32
  value is greater than LONG_MAX. Previously, the value would
  overflow. This generally only affects 32-bit machines. Reported
  by Remi Collet. GitHub #79.
• For uint64 values, the maxminddb extension now returns an
  integer rather than a string when the value is less than or equal
  to LONG_MAX. This more closely matches the behavior of the pure
  PHP reader.