Matrix package moved to \'Suggests\' and Matrix classes not imported in NAMESPACE, for faster package load.  added \'reqPack\' calls as needed.  prepackaged binary datasets are now of standard types, only --- not \'collections\', which is proscribed.  inst/extdata/package-data.R builds them.  rewrote \'datasets\' demo to build related \'collections\' in active session.  removed \'view.params\'.  still some question about where \'view.parameters\' etc should be defined.