- 
            Small list parser optimization. GH#368
          
- 
            Pass container attributes through sequence parser or unary ending down
            to a sequence parser. GH#370 TRAC#12085
          
- 
            More fine grained sequence attribute check message. GH#371
          
- 
            Removed redundant check in skip_over.
            GH#373
- 
            Workaround constexpr in noexcept VS2015 bug in entire x3::variant. GH#379
          
- 
            Fixed calc4b example compilation. GH#384
          
- 
            Minor code improvements. GH#374