- Renamed the existing object.html.tmpl to class.html.tmpl and fix it to reflect class features. Providing an object-only template remains to be done. - Added an experimental gathering facility for part objects, relative to a given entity object. It returns a [dict] which allows to reuse the parts gathered throughout the templates rendering process. - Moved the process=@* methods to the doc object (this increases the cohesion). - Adjusted the current documentation artifacts for the changes (@object -> @class where applicable).