• Changed: renamed getBy<Identifier> methods to <identifier> (#29).
• Changed: renamed getAll to all (#29).
• Changed: renamed listBy to iterator (#29).
• Changed: ISO3166 and DataValidator are now final (#24).
• Changed: support for PHP 5.5.x has been dropped (#23).
• Changed: get() method has been removed (#19).
• Changed: currency key in default dataset entries is now always an array (#15).
• New: ISO3166 now implements Countable interface (#18).
• New: can now replace default dataset by injecting a new one into ISO3166 through the constructor (#18).
• New: getBy[Alpha2,Alpha3,Numeric] now throw InvalidArgumentException if anything other than a string is passed in (#18).