This was the first official release of Phoenix as first class Boost citizen.
        As a consequence of the review of Phoenix V2 the internals got completely
        rewritten. Therefore the internal extension mechanism is different.
      
- 
            composite<...>, as_composite<...> and compose are gone and
            have been replaced. For an in depth discussion see the section Inside Phoenix
          
- 
            phoenix.modules.function
            phoenix::function now supports function objects that implement the Boost.Result
            Of protocol. This is a breaking change
          
- 
            Boilerplate macros to easily adapt already existing functions and function
            objects
          
- 
            Bind is not completely compatible
            with Boost.Bind. The limitations will be documented as soon as possible.