[/
  Copyright 2009 John Maddock.
  Distributed under the Boost Software License, Version 1.0.
  (See accompanying file LICENSE_1_0.txt or copy at
  http://www.boost.org/LICENSE_1_0.txt).
]

[section:history History]

[h4 Boost-1.82.0]

* Added __is_swappable trait.
* Added a workaround for gcc 4.6 that allows __is_nothrow_swappable to work.

[h4 Boost-1.70.0]

* Added new traits __is_bounded_array, __is_unbounded_array, __copy_reference, __copy_cv_ref.

[h4 Boost-1.68.0]

* Added support for detecting trivial moves on clang.
* Correct some mismatched `#pragam warning push/pop`.
* Improve __is_virtual_base_of to give more robust answers.
* Add support for __is_final with msvc.

[h4 Boost 1.67.0]

* Added new traits __detected, __detected_or, __is_detected, __is_detected_convertible, __is_detected_exact, __is_complete.
* Added greatly improved code for detecting binary operators.
* Add assertions for completeness to traits which require complete types as arguments: this prevents various traits from giving eroneous results from incomplete types.
* Fix minor issue with mpl compatibility, see [@https://svn.boost.org/trac/boost/ticket/12212 #12212].
* Add macro to indicate when is_constructible is fully implemented, see [@https://svn.boost.org/trac/boost/ticket/12003 #12003].
* Update __is_function and __is_member_function_pointer to work correctly with C++17 noexcept specifications.
* Add workaround for __is_default_constructible and `std::pair`.
* Added fallback for __is_nothrow_swappable on pre-C++11 compilers.

[h4 Boost 1.64.0]

* Added new trait __make_void.

[h4 Boost 1.60.0]

* Refactored traits to depend only on Boost.Config.  Greatly simplified code to improve readability and remove workarounds for old compilers no longer supported.
* Fix __decay to follow C++11 semantics, see [@https://svn.boost.org/trac/boost/ticket/7760 #7760].
* Added a number of new traits __is_assignable, __is_default_constructible, __is_constructible and __is_destructible required to fix bugs in a number of other traits,
see for example [@https://svn.boost.org/trac/boost/ticket/11324 #11324].

[h4 Boost 1.58.0]

* Fixed issue with CUDA on Clang compiler see [@https://svn.boost.org/trac/boost/ticket/10694 #10694].
* Fixed __is_nothrow_move_assignable and __is_nothrow_move_constructible to work on VC12 and later.

[h4 Boost 1.57.0]

* Added new traits __is_copy_assignable and __is_final.
* Misc fixes for newer versions of clang and msvc-14.

[h4 Boost 1.56.0]

* Fixed issues [@https://svn.boost.org/trac/boost/ticket/7317 #7317],
[@https://svn.boost.org/trac/boost/ticket/9474 #9474].


[h4 Boost 1.55.0]

* Added new trait __is_copy_constructible.

[h4 Boost 1.54.0]

* Added new traits __is_nothrow_move_assignable, __is_nothrow_move_constructible, __has_trivial_move_assign, 
__has_trivial_move_constructor.

[h4 Boost 1.47.0]

* [* Breaking change]: changed __is_convertible to C++0x behaviour when possible.
* Fixed issues [@https://svn.boost.org/trac/boost/ticket/5271 #5271],
[@https://svn.boost.org/trac/boost/ticket/4530 #4530].


[h4 Boost 1.45.0]

* Added new traits __add_rvalue_reference, __add_lvalue_reference and __common_type.
* Minor fixes to __is_signed, __is_unsigned and __is_virtual_base_of.

[h4 Boost 1.44.0]

* Added support for rvalue references throughout the library, plus two new traits classes
__is_rvalue_reference and __is_lvalue_reference.  Fixes [@https://svn.boost.org/trac/boost/ticket/4407 #4407]
and [@https://svn.boost.org/trac/boost/ticket/3804 #3804].
* Fixed ticket [@https://svn.boost.org/trac/boost/ticket/3621 #3621].

[h4 Boost 1.42.0]

* Fixed issue [@https://svn.boost.org/trac/boost/ticket/3704 #3704].


[endsect]

