-+ Added HTTP 'protocol' version request option. (Ilia)
-+ Added optional class_name param to HttpMessage::fromString()
-+ Added HttpMessage::toMessageTypeObject(), HttpMessage::detach(), HttpMessage::prepend()
-+ Added Iterator interface to HttpMessage
-+ Added http_get_request_body_stream()
++ Added 'etag' request option.
++ Added missing accessors to response status text to HttpMessage and HttpRequest classes.