changed some string type to READABLE_STRING_32 or READABLE_STRING_8 for now regarding Meta variables (need decision here..)
renamed ENVIRONMENT_NAMES into META_NAMES better usage of READABLE_STRING_GENERAL, and other strings abstract RESPONSE_BUFFER in implementation of EWSGI for the implementation, inheriting from deferred specification (more to come later)
few changes on new `router' library (still in-progress)