update module ordering
make use of object properties
use object properties for CheckBox
code shuffle
cleanup
use object properties on Container
use object properties for the LineEdit
use object property for PushButton
use object properties for RadioButton
use object properties for Slider
use object properties on Splitter
fix typo
fix typo
childIndex -> indexOf
add support for Action containment to Widget
add an Action class
remove assert clutter
kill the assert module
indexOf -> childIndex
more action methods