Beautify ip check
Add 'geolite' to possible database filenames
Update bundled maxmind/geoip-api-php to current master (post 1.14)
Add link to settings on plugin page
Correct geoInfo type hint
Change link to GeoLite Country database; remove info about GeoIP2 update

* City data is not needed and the GeoLite database file is smaller
* No update to GeoIP2 is planned till they announce end of life for the
  legacy version. There is no reason to update.
Reformat code according to WordPress coding style
Add changelog and update versions number
Update translation files