endian part changed/refactored & tests fixed
boost::chrono & std::chrono support added
std/boost time_point suport added
std/boost optional serialization added & readme fixed
Update std_optional_serializers.hpp
Update std_optional_serializers.hpp
Update README
Update README
constexpr removed if not supported by compiler & boost::optional serialization fixed
Merge branch 'master' of github.com:niXman/yas
Adaptation for Visual C++ 2013

In Visual C++ 2013 __cplusplus == 199711 is still, but many of C++11 features are available, except of required `constexpr` and `nothrow`