Log Message:
Changes 1.62.0:
New Libraries
-------------
Fiber:
* Framework for userland-threads/fibers, from Oliver Kowalke.
QVM:
* Boost QVM is a generic library for working with quaternions, vectors and \ 
matrices of static size with the emphasis on 2, 3 and 4-dimensional operations \ 
needed in graphics, video games and simulation applications, from Emil \ 
Dotchevski.

Updated Libraries
-----------------
Atomic:
* Improved support for Oracle Studio and SPARC. The library now provides native \ 
atomic operations on SPARCv8+.

Chrono:
* 11330 boost::chrono::duration default constructor doesn't initialize rep_
* 11618 Chrono IO V2 doc ios_state.hpp does not exist
* 11631 boost chrono io v2 does not let you support custom clocks

Circular Buffer:
* Debug implementation is no longer used by default in debug mode. Debug \ 
implementation does not have the same thread safety guarantees as the normal \ 
(release) implementation or other containers. As a result of this change \ 
BOOST_CB_DISABLE_DEBUG macro is no longer used. BOOST_CB_ENABLE_DEBUG=1 should \ 
be defined instead to enable debug support.

Container:
* Fixed bugs:
Trac 9481: "Minor comment typo in Boost.Container".
Trac 9689: "Add piecewise_construct to boost::container".
Trac 11170: "Doc slip for index_of".
Trac 11802: "Incorrect ordering after using insert() with ordered_range_t \ 
on a flat_multiset with a non-default sort order".
Trac 12117: "flat_set constructor with ordered_unique_range".
Trac 12177: "vector::priv_merge uses unqualified uintptr_t".
Trac 12183: "GCC 6.1 thinks boost::container::string violates strict \ 
aliasing".
Trac 12256: "set<std::pair<int,int>>::insert cause compilation \ 
error in debug configuration in Visual Studio 2012".
Trac 12273: "static_vector max_size() and capacity() should be constant \ 
expressions". Added constant static_vector<>::static_capacity to use \ 
the configured capacity in constant expressions.
Trac 12286: "PMR flat_map from Boost Container does not compile".
Trac 12296: "{deque,string} combine for a memory leak".
Trac 12319: "flat_set should be nothrow move constructible".
* Revised noexcept expressions of default and move constructors in all containers.
* Implemented C++17 insert_or_assign/try_emplace for map and flat_map.
* Implemented C++17 extract/insert(node) for map, multimap, set, multiset.

Context:
* 12215 all stack corrupted on Windows using default fixedsize_stack
* 12242 build issue with Intel C++ compiler for MacOS
* fix stack unwinding for execution_context_v1

Coroutine:
* deprecated in favour of Coroutine2

Coroutine2:
* 12221 coroutine<>::push_type function starts without pushing
* do not swallow exceptions thrown at coroutine<>::push_type construction

DLL:
* Mangled symbols and classes loading was implemented by Klemens Morgenstern
* Suppress a 'unused parameter' warning in detail::aggressive_ptr_cast pull-request 9
* Allowed to query non-existant sections pull-request 32
* More tests and docs

Functional/Forward:
* Fix C++11 compile error.

Interprocess:
* Fixed bug GitHub Pull 27 ("Fix undefined behavior").

Intrusive:
* Fixed bugs:
Boost Trac 11476: has_member_function_callable_with.hpp is massively broken with \ 
BOOST_NO_CXX11_DECLTYPE
Boost Trac 11994: Support intrusive container key extractors that return the key \ 
by value
Boost Trac 12184: clang -Wdocumentation warning
Boost Trac 12190: Intrusive List + Flat Map combination crashes
Boost Trac 12229: intrusive::unordered_set<T>::rehash() broken
Boost Trac 12245: bstree uses a shared static size_traits for \ 
constant_time_size<false>

Lexical Cast:
* Fix incorrect static assertion 11759

Log:
* New features:
Added new tools for inter-process logging on a local machine. The implementation \ 
includes a resource name wrapper, an inter-process message queue and a sink \ 
backend.
Added a new character decorator called max_size_decor. The new decorator allows \ 
to limit the output of its adopted formatter up to the specified length.
* Bug fixes:
Fixed that logging streams could retain formatting settings across different log \ 
records. (12178)
See changelog for more details.

Math:
* New Features:
Enabled all the special function code to work correctly with types whose \ 
precision can change at runtime: for example type mpfr_float from \ 
Boost.Multiprecision.
* Patches:
Fix tgamma_delta_ratio for cases where the delta is small compared to the base.
Fix misc GCC-4.4 test failures.

Optional:
* Fixed Trac 12179.

Phoenix:
* Fix compilation for MSVC 10. pull-request 18
* Remove unused preprocessed files. pull-request 28
* Fix erroneous doc for switch_ statement. 8156
* Cleanup config unordered. pull-request 33
* Suppress unused placeholder warnings.
* Fix too few arguments error on binary math functions.

Regex:
* Fix buffer over-run error when parsing certain invalid regexes, see 12222.
* Fix detection of ICU in library build, see 12152.
* Fix bug in case sensitivity change, see 11940.
* Allow types wider than int in \x{} expressions (for char32_t etc), see 11988.

Test:
* Boost.test v3.3 see the Change log section for more details.
* New features
dataset driven test-cases have now a unique name and all sample tests of a \ 
dataset live inside the same test suite
Boost.test learned a new command line switch, --logger for setting a test logger \ 
as well as its parameter in one command
Boost.test learned to have several loggers at the same time, each of which \ 
having their own log level and output stream
Boost.test learned a new logger, JUNIT, that is able to output Junit/xUnit \ 
compatible streams
It is now possible to specify several test filters through the environment \ 
variable BOOST_TEST_RUN_FILTERS
* Bug fixes
Trac tickets 8707, 8834, 11128, 11845, 11859, 12024,
Trac tickets 12093, 12103, 12224, 12241, 12257, 12378

Thread:
* 12102 condition_variable_fwd.hpp fails to compile when \ 
BOOST_THREAD_PROVIDES_INTERRUPTIONS is disabled
* 12120 Performance improvement in thread/barrier.hpp
* 12146 make_exceptional_future is not mentioned in the docs
* 12202 shared_lock should be in shared_mutex header
* 12371 boost thread/future.hpp fails to build
* 88 fix typos in boost::upgrade_lock
* 89 fix a bug in upgrade_to_unique_lock<>::operator=()
* 90 fix a bug in try_lock_wrapper<>::operator=()
* 91 Add shared_lock_guard to the included lock types
* 92 Fixed compilation with MSVC-8.
* 93 Fix variable shadowing warnings (Clang)
* 94 fix bugs in boost::barrier
* 95 fix a mistake in boost::completion_latch
* 96 rename async_func.hpp to invoker.hpp.
* 97 fix a mistake in sync_timed_queue<>::pull_until()

TypeIndex:
* ctti_type_index was made constexpr in C++14. Now it is possible to retrieve \ 
actual name of the type as const char* at compile time. So we can do a lot of \ 
interesting things at compile time: check namespace of a type, sort types \ 
according to their lexical representation, check that type is a template type \ 
and so on... A few examples were provided.
* Fixed issue with noexcept on MSVC in type names and issue with space in type \ 
name (pulled from klemens-morgenstern/develop)
* Fixed typos pull-request 7
* Improved CI testing

Unordered:
* Remove use of deprecated boost::iterator.
* Fixed an exception safety issue in assignment of unordered_multiset and \ 
unordered_multimap.
* See the changelog for more details.

Variant:
* Fixed variant construction from classes derived from variant 7120, 10278, 12155
* Variant constructors and assignment operators now do not participate in \ 
overload resolutions if variant can not hold the input type 5871, 11602
* Fixed the issue with implicit conversion operator in C++11 8555
* Fixed comparisons when variant holds non-const reference 11751
* Fixed noexcept for variant's move-assignment 11696
* Fixed double quotes in includes 12057
* Dropped BOOST_VARIANT_NO_REFERENCE_SUPPORT macro and dropped support for \ 
compilers without SFINAE 12250
* Suppress implicit instantiation of MPL end iterator
* Multiple minor fixes (typos, missing includes)