ICU 54 is a major release of ICU, with new features, new APIs and many bug fixes in data and code. It supports the latest versions of the Unicode locale data (CLDR 26, September 2014) and Unicode Standard (Unicode 7.0, June 2014). The improvements include 72 new measurement units, Unihan radical-stroke collation moved into root, new RBNF PluralFormat syntax, dictionary-based word and line break for Burmese, support for short locale display names, compatibility support for IANA time zone data abbreviations, a tech preview of FilteredBreakIterator using ULI break data, ICU4C thread safety fixes, and the ability to build ICU4C Paragraph Layout with HarfBuzz.

(adam)