- 
            Removed support for already deprecated GCC < 4.3 and MSVC < 9.0
            (Visual 2008) compilers.
          
- 
            Default allocator parameter changed form new_allocator<T>tovoidto reduce symbol lenghts.
- 
            Fixed bugs:
            
          
 
- 
            vector can now have options, using vector_options.
            The growth factor and the stored size type can be specified.
- 
            Improved range insertion in flat_[multimap/set]
            containers overall complexity is reduced to O(NlogN).
          
- 
            Fixed bugs:
            
          
 
- 
            flat_[multimap/set] can now work as container adaptors,
            as proposed in P0429R1.
            The allocator argument is checked for size() and
            empty() members. If so, the argument is interpreted
            as the required underlying container. This means that static_vector,
            stable_vector and small_vector
            can be used now with flat associative containers.
          
- 
            Fixed bugs:
            
          
 
- 
            Implemented extract_sequence,adopt_sequencefunctions
            for flat_[multi]map/set associative containers.
- 
            Fixed bugs:
            
          
 
- 
            Implemented Polymorphic
            Memory Resources.
          
- 
            Add more BOOST_ASSERT checks to test preconditions in some operations
            (like pop_back,pop_front,back,front, etc.)
- 
            Added C++11 back/frontoperations tobasic_string.
- 
            Fixed bugs:
            
          
 
- 
            Experimental small_vectorcontainer.
- 
            Massive dependency reorganization. Now Boost.Container
            depends on very basic utilities like Boost.Core and Boost.Intrusive.
            Preprocessed code size have decreased considerably and compilation times
            have improved.
          
- 
            Added nthandindex_offunctions to containers with
            random-access iterators (exceptbasic_string).
- 
            Added C++17's allocator_traits<Allocator>::is_always_equal.
- 
            Updated containers to implement new constructors as specified in 2210.
            Missing allocator-extended constructor for allocator-aware containers.
          
- 
            Fixed bugs:
            
          
- 
            Source Breaking: scoped_allocator_adaptor'spropagate_on_container_copy_assignment,propagate_on_container_move_assignmentandpropagate_on_container_swapare no longer::boost::integral_constant<bool, true/false>types. The dependency reorganization
            needed to break with those classes to avoid MPL dependencies, and interoperability
            withstd::integral_constantwas not guaranteed.
            Code assummingboost::true_type/boost::false_typeon this will not compile. As a workaround, use the guaranteed internal::valueconstant:::boost::integral_constant<bool, scoped_allocator_adaptor<Allocator>::propagate_on_container_move_assignment::value>.
 
- 
            Added support for initializer_list.
            Contributed by Robert Matusewicz.
- 
            Fixed double destruction bugs in vector and backward expansion capable
            allocators.
          
- 
            Fixed bugs:
            
          
 
- 
            Added experimental static_vectorclass, based on Andrew Hundt's and Adam Wulkiewicz's high performancevarrayclass.
- 
            Speed improvements in vectorconstructors/copy/move/swap, dispatching to memcpy when possible.
- 
            Support for BOOST_NO_EXCEPTIONS#7227.
- 
            Fixed bugs #7921,
            #7969,
            #8118,
            #8294,
            #8553,
            #8724.
          
 
- 
            Fixed bug #7650.
          
- 
            Improved vector's insertion
            performance.
- 
            Changed again experimental multiallocation interface for better performance
            (still experimental).
          
- 
            Added no exception support for those willing to disable exceptions in
            their compilers.
          
- 
            Fixed GCC -Wshadow warnings.
          
- 
            Replaced deprecated BOOST_NO_XXXX with newer BOOST_NO_CXX11_XXX macros.
          
 
- 
            Improved stable_vector's
            template code bloat and type safety.
- 
            Changed typedefs and reordered functions of sequence containers to improve
            doxygen documentation.
          
- 
            Fixed bugs #6615,
            #7139,
            #7215,
            #7232,
            #7269,
            #7439.
          
- 
            Implemented LWG Issue #149 (range insertion now returns an iterator)
            & cleaned up insertion code in most containers
          
- 
            Corrected aliasing errors.
          
 
- 
            First release. Container code from Boost.Interprocess
            was deleted and redirected to Boost.Container
             via using directives.