- new methods for MetaSlot to factor out common code: + slotName (to ease name-construction, care about slot container) + createFromParameterSyntax: essentially move from ::xotcl::Attribute to the meta class - test environment: make sure to avoid confusions between the "namespace" method and command
- added parameter "incremental" to ::xotcl::Attribute: when set, one can use "object paramname add|delete $value" etc. - use setters with parameter constraints in slot optimizer - as a consequence, setting attributes via slot names is about twice as fast as before, when parameter constraints are used. - extended regression test