- nx.tcl: added support for positional object parameter and removed special handling of the last argument for the init block; added attributes "position" and "positional" to ObjectParameterSlots, removed last argument of method "objectparameter" - nx.tcl: simplified createBootstrapAttributeSlots (second round of default value setting seems not necessary) - nx.tcl: some cleanup
* Hopefully the last big naming change: Instead of writing "C class-object method foo {} {...}" one can write now "C class method foo {} {...}" to define a class method named "foo" for class "C". This naming change became possible by defining XOTcl's "class" (and "superclass") as object parameter only. To change a class of an object o, one has to use "o configure -class NEWCLASS". The term "object-class" looks alien to language beginners, the term "class" is much more straightforward. Changing classes or superclasses is seldomly used by typicall application programs. For already existing nx scripts, changing "object-class" into class should be straightforward.
* various documentation updates (migration guide, nx tutorial)
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