* Changed CountryCode.

  - Added getByCodeIgnoreCase(String).

  - Changed the behavior of getByCode(String). In older versions,
    it was an alias of getByCode(String, false), but not it is
    an alias of getByCode(String, true).

  - Changed the behavior of getByCode(int). It now returns null
    when 0 or a negative integer is given.
* Changed CurrencyCode.

  - Added getByCodeIgnoreCase(String).

  - Changed the behavior of getByCode(String). In older versions,
    it was an alias of getByCode(String, false), but now it is
    an alias of getByCode(String, true).

  - Changed the behavior of getByCode(int). It now returns null
    when 0 or a negative integer is given.

  - Added getByCountryIgnoreCase(String).

  - Changed the behavior of getByCountry(String). In older versions,
    it was an alias of getByCountry(String, false), but now it is
    an alias of getByCountry(String, true).
Updated CurrencyCodeTest.
* Changed LanguageAlpha3Code.

  - Added getByCodeIgnoreCase(String).

  - Changed the behavior of getByCode(String). In older versions,
    it was an alias of getByCode(String, false), but now it is
    an alias of getByCode(String, true).
Changed LanguageCode.

  - Added getByCodeIgnoreCase(String).

  - Changed the behavior of getByCode(String). In older versions,
    it was an alias of getByCode(String, false), but now it is
    an alias of getByCode(String, true).
Changed LocaleCode.
Changed ScriptCode.
Updated documents for version 1.13.