Utilityを追加
TypeTraitsを追加
integral_constant.hppを追加
Merge branch 'feature/integral_constant' into develop
add remove_cv.hpp, remove_cons.hppt, remove_volatile.hpp
Merge branch 'feature/remove_cv' into develop
remove utility/swap because it is not implemented
add remove_reference.hpp
Merge branch 'feature/remove_reference' into develop
add is_same.hpp
Merge branch 'feature/is_same' into develop
add enabler.hpp
add enable_if, disable_if
Merge branch 'feature/enabler' into develop
add is_pointer.hpp
Merge branch 'feature/is_pointer' into develop
add move.hpp
Merge branch 'feature/move' into develop
add swap.hpp
Merge branch 'feature/swap' into develop