add serialization and deserialization operators for cxxtools::Char (unicode char)
add serialization and deserialization operators for cxxtools::Char (unicode char)

OlafRadicke/cxxtools,maekitalo/cxxtools,OlafRadicke/cxxtools,maekitalo/cxxtools,maekitalo/cxxtools,OlafRadicke/cxxtools,maekitalo/cxxtools,OlafRadicke/cxxtools