- nsf.c: * improved source code documentation * added parameter option "args" in order to get eventually rid of hard-wired residual args. * improved a few error messages * fixed object parameters consisting only of plain parameters (previously, no parameters were returned in this case, e.g. for method parameters; but object parameter code depends on it) - extended and updated regression tests
- provided nicer registration and inspection interface for unknown handlers - added documentation for unknown handlers in tutorial - cleanup of __unknown