This release contains an enormous amount of internal refactoring (not mentioned in the changelog) as well as some neat new features and bug fixes :)

Fixed

• Fixed #434 leaf nodes are now getting set as expected for lazypopulate.
• Style builder can be applied to PopupControl, Tab, TableColumnBase (#476)
• Better handling of Column.makeEditable() for properties that implement Property

Changes

• Refactoring: Moved all extension functions and properties targeting TreeView
  from Nodes.kt to TreeView.kt.
• alert builder accepts optional owner parameter (#483)

Additions

• fitToParentHeight/Width/Size as well as fitToHeight/Width/Size(region) helpers (#519)
• beforeShutdown allows you to register shutdown hooks
• DataGridPaginator component to help with pagination for DataGrid
• runAsync supports daemon parameter to control thread characteristics (#508)
• Node.runAsyncWithOverlay
• Latch, a subclass of CountdownLatch that exposes a lockedProperty and provides immediate release ability
• Inline type safe stylesheet on Parent using the stylesheet builder
• Tab.close()
• JsonBuilder.add() supports Iterable (Turned into JsonArray)
• Added customitem menu item builder (#488)
• The default lefCheck for lazypopulate is now also recognizing an empty list as a leaf.
• menubutton builder (#461)
• MenuButton.item builder
• Added Fragment support forTreeCell