code: func (v Handler) Append(router *mux.Router) {
  	router.Methods(http.MethodGet).Path("/api/version").
  		HandlerFunc(func(response http.ResponseWriter, request *http.Request) {
  			v := struct {
  				Version  string
  				Codename string
  			}{
  				Version:  Version,
  				Codename: Codename,
  			}
  
  			if err := templatesRenderer.JSON(response, http.StatusOK, v); err != nil {
  				log.Error(err)
  			}
  		})
  }
docs: // Append adds version routes on a router.