2017-08-04 version 2.1.5

• Improve cross platform configuration (#624)
• Add boost asio examples (including zlib) (#610)
• Remove some warnings (#611)
• Fix unpack visitor to treat float32/64 correctly (#613)
• Improve documents (#616)
• Fix alignment problem on some platform (#617, #518)
• Fix conflict std::tuple, std::pair, and boost::fusion::sequence problem (#619)

2017-08-03 version 2.1.4 (Invalid)

• See #623