- 
            The customization point transform_attributenow has to implement a third function:void
            fail(Exposed&),
            which normally will do nothing. This function will be called whenever
            the right hand side of therule(or the embedded parser ofattr_cast)
            fail parsing. This change affects Qi only. See the
            description of thetraits::transform_attributefor more
            details.
- 
            Added support for attribute sequences created with BOOST_FUSION_ADAPT_CLASSandBOOST_FUSION_ADAPT_CLASS_NAMED.
            This support requires to include the new header file:#include
            <boost/spirit/include/support_adapt_class_attributes.hpp>.
- 
            Added karma::ostream_iteratoras a counterpart toqi::istream_iterator(see new header file:#include <boost/spirit/home/support/iterators/ostream_iterator.hpp>).
- 
            Added qi::holdallowing to make sure the embedded
            parser does not touch the passed attribute in case it fails parsing.
- 
            Added qi::no_skipdirective, which is
            equivalent toqi::lexeme,
            except that it does not pre-skip.
- 
            Added karma::no_delimitdirective, which
            is equivalent tokarma::verbatim, except that it does
            not perform a post-delimiting step.
- 
            Added a new input_iterator policy for the multi_passiterator framework (namedbuffering_input_iterator)
            allowing to wrap underlying input iterators which do not store the last
            character read from the input (such asstd::istream_iterator).
            This is now used as the default input policy.
- 
            Sequences (in Qi and Karma)
            may now have a component having no attribute even as their last element.
          
- 
            Sequences (in Qi and Karma)
            can now take one element attribute sequences as their attribute.
          
- 
            Constructs like karma::buffer[karma::buffer[...]]don't result in performing double
            buffering anymore. The same is true if an alternative is wrapped into
            akarma::buffer[]directive (as for instance:buffer[a] | b).
- 
            The Spirit.Karma output iterator (which is used
            internally, but also is exposed when using the stream based API) is now
            properly copyable (thanks to Jonas Persson for reporting this issue).
          
- 
            The default multi_passiterator is now usable with underlying input iterators which do not store
            the last character read from the input (such asstd::istream_iterator).
            Thanks to Larry Evans and Peter Schueller for independently reporting
            this problem.
- 
            The directive karma::omit[]now does not accept an arbitrary attribute type anymore.
- 
            The Spirit.Karma predicates (the and-predicate and
            the not-predicate) and the directive karma::omit[]now disable output altogether instead
            of intercepting the output into a buffer which got discarded as before.
- 
            Fixed karma::ruleto properly handles optional attributes.
- 
            The library does not minimize the generated lexer tables for dynamic
            lexers by default anymore. The generated tables will now be minimized
            for static lexers only.
          
- 
            The function lexer<>::init_dfa()now takes a single boolean parameter (which defaults tofalse) allowing to force minimization
            of the generated lexer tables.