fix which parent is used for adding/removing items
add a layout that has only one stretchy thing
handle ioerror
add styles that give out change events
fix wipe effect
fix platform wiper
fix id handling on objects
add visible to IUIBase
states with transitions
fix additems bug
deeper copy of assets
FlexJSStore works well enough to try to make it work on JS.  Drag/Drop, ToolTips, States with Transitions are functional