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release notes sync from master

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Andrzej Krzemienski
2016-02-12 20:17:44 +01:00
parent 200e19fada
commit e24ab26874
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Boost.Optional
Copyright (c) 2015 Andrzej Krzemienski
Copyright (c) 2015, 2016 Andrzej Krzemienski
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE_1_0.txt or copy at
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[heading Boost Release X.XX]
* Changed the implementation of `boost::none`: now it is a constant with internal linkage. This addresses [@https://svn.boost.org/trac/boost/ticket/11203 Trac #11203].
* Now `boost::optional` is specialized for reference parameters. This way the `sizeof` of optional reference is that of a pointer, and a number of bugs is avoided.
[heading Boost Release 1.60]
* Changed the implementation of `boost::none` again. Now it is a const object with internal linkage (as any other tag). This fixes [@https://svn.boost.org/trac/boost/ticket/11203 Trac #11203].
[heading Boost Release 1.59]
* For C++03 compilers, added 0-argument overload for member function `emplace()`, and therewith removed the dependency on `<boost/utility/in_place_factory.hpp>`.
* Fixed [@https://svn.boost.org/trac/boost/ticket/11241 Trac #11241].
[heading Boost Release 1.58]