* multi_index_container is now efficiently movable.
* Initializer lists supported.
* Emplace functions provided.
* Non-copyable elements (such as std::unique_ptr<T>) supported. This includes insertion of a range [first,last) where the iterators point to a type that is convertible to that of the element: no copy construction happens in the process.
* Random access indices provide shrink_to_fit().
* The following classes are deprecated:
  - member_offset,
  - const_mem_fun_explicit,
  - mem_fun_explicit,
  - composite_key_result_equal_to,
  - composite_key_result_less,
  - composite_key_result_greater,
  - composite_key_result_hash.