- added argument for converter to return the converted tcl_obj, which should be passed on (currently only used for viaCmd); this way, we could remove the kludge of querying the converter after the conversion for special handling.
- added parameter option slot= to pass slotobj to a certain parameter - use slot option to keep relation between parameter and slot - object parameter dispatch type checker on slot objects - allow transformation via user-defined converter (can be use to standardize parameter values) experimental implementation, refcounting has to be looked in detail, maybe we need a different interface for the converters