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          C++11 allocator model support implemented by Glen Fernandes.
        
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          Documentation refactored by Paul A. Bristow using Quickbook, Doxygen and
          Autoindexing.
        
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          Rvalue references emulation added by Antony Polukhin using Boost.Move.
        
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          Added methods erase_begin(size_type) and erase_end(size_type) with constant
          complexity for such types of stored elements which do not need an explicit
          destruction e.g. int or double.
        
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          Similarly changed implementation of the clear() method and the destructor
          so their complexity is now constant for such types of stored elements which
          do not require an explicit destruction (the complexity for other types
          remains linear).
        
*Added new methods is_linearized() and rotate(const_iterator).
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          Fixed bugs: #1987
          Patch to make circular_buffer.hpp #includes absolute. #1852
          Copy constructor does not copy capacity.
        
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          Changed behaviour of the circular_buffer(const allocator_type&) constructor.
          Since this version the constructor does not allocate any memory and both
          capacity and size are set to zero.
        
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          Fixed bug: #1919
          Default constructed circular buffer throws std::bad_alloc.