1.84.0
- Breaking changes
  - to_title for the WinAPI backend returns the string unchanged instead of an empty string
1.83.0
- Breaking changes
  - Bitwise/binary operators (left/right shift, binary and/or/xor/not) are no longer supported in message catalog files matching GNU gettext behavior
  - Std backend on Windows uses the classic locale instead of the system locale when the requested locale does not exist (now same as on other OSs)
  - localization_backend_manager::get is deprecated and should be replaced by localization_backend_manager::create or simply using the generator
- Other improvements and fixes
  - Introduce converter classes as alternative to to_utf/from_utf/between
  - Fix UB on invalid index in format strings
  - Fix conversion of UTF to e.g. iso-2022-jp on Windows without ICU
  - Use long long as the count parameter for pluralized translations
  - Make localization_backend_manager movable
  - Add missing noexcept to move assignments/constructors
1.82.0
- Breaking changes
  - get_system_locale and dependents will now correctly favor $LC_ALL over LC_CTYPE as defined by POSIX
  - utf8_codecvt::out returns partial for trailing (UTF) surrogates
- Other improvements and fixes
  - Add boost::locale::util::locale_data to parse a locale
  - boost::locale::info::encoding() result is in uppercase as documented, e.g. "UTF-8" instead of "utf-8"
  - Support M49 country codes such as en_001 or en_150
  - Treat en_US_POSIX as an alias for the C locale
1.81.0
- Breaking changes
  - Require C++11 or higher
  - Modernize code (C++11 features instead of Boost replacements, consistent formatting)
  - Error on use of -sICU_LINK_LOCALE and -sICU_LINK, use -sICU_*_NAME when -sICU_PATH is not enough
  - Convert character_facet_type & locale_category_type to the enum classes char_facet_t & category_t
- Other improvements and fixes
  - Fix build on macOS with iconv
  - Fix int-overflow on negative roll of years in date_time
  - Assume and use UTF-16 encoding for Windows wchar_t-codecvt
  - Fix rounding issues with calendar time
  - Make basic_format movable allowing it to be returned from functions
  - Fix conversion of e.g. codepage iso-2022-jp on Windows
  - Add more Windows codepages, e.g. cp1025, and various ISO and IBM codepages
  - Performance improvements
1.80.0
- Deprecated support for C++03 and earlier, C++11 will be required in the next release
- Provide -sICU_LINK_LOCALE as a temporary replacement for -sICU_LINK which is incompatible with Boost.Regex.
- -sICU_LINK_LOCALE and -sICU_LINK are deprecated and will be replaced by ICU_*_NAME options to be compatible with Boost.Regex
- Fix UB/assertion failure in the ICU collator implementation when transforming empty strings
- Fix some issues related to visibility of classes in shared libraries (Unix only)
- Fix compatibility with C++20 mode
- Fix compatibility with BOOST_USE_WINDOWS_H
- Fix build failures due to missing includes
- Handle or suppress many warnings which makes the build log cleaner
1.67.0
- Added support of unique_ptr interface in addition to C++2003 auto_ptr - in order to support C++2017, now you can use BOOST_LOCALE_HIDE_AUTO_PTR definition to remove auto_ptr from the interfaces and prevent deprecated watnings
- Fixed test problem with ICU >60.1
- Fix of solaris build
- Fixed wired FreeBSD/clang issue on optimized build. Probably compiler workaround
- Added workaround for failing MSVC tests due to 932 codepage codecvt issue
- Fixed bugs 6851, 12572, 12453
- Fixed missing throw in case of failure in icu/date_time
- Fixed build agains Boost.Thread v4
- Fixed Year of week instead of year ICU backend formatting
- Fixed formatting test for ICU 56.1 and above
1.60.0
- Implemented generic codecvt facet and add general purpose utf8_codecvt facet
- Added posix locale support for FreeBSD 10.0 and above
- Fixed issues 10017 (sun redefinition on SunOS), 11163 (set_default_messages_domain incorrect behavior), 11673 - build issues
- Some warning cleanup
- Fixed tests for latest ICU versions
- Added workaround for libc++ issues
- Added new defines BOOST_LOCALE_ENABLE_CHAR16_T and BOOST_LOCALE_ENABLE_CHAR32_T to enable C++11 char16_t and char32_t instead of deprecated ones
1.53.0 - Bug fixes: 7743, 7386, 7734, 7701, 7368, 7762:
- 7743 - security related bug fix, some invalid UTF-8 sequences where accepted as valid
- 7386 - invalid Windows codepage names used
- 7734 - fixed missing documentation, caused by a error in Doxygen formatting
- 7701 - fixed missing std:: in some places
- 7368, 7762 - Spelling, grammar, typos
1.49.0
- Fixed incorrect use of MultiByteToWideChar in detection of invalid input sequences
1.48.0 - First Release