*** version 0.12.2 ***

* var Tab is now private
* fixed Element.configureAttribute

*** version 0.12.1 ***

* tabs.css renamed to tabview.css
* calls to "set" now queued so they can be made before "contentReady"


*** version 0.12.0 ***

* TabView widget introduced

* Note: border_tabs.css included as basic skin to enable "tabs" look
