LuaO: added returnNil
luna5: instanciate object before setting tables
LComponent: pop name
LTreeViewItem: implemented sort method callback
LComponent: findColour returns toDisplayString, ARGB; setColour accepts ARGB as argument
LuaO: pop table in getList
LuaO: added getComponentList, to receive a list of components
LuaO: added TreeViewItem to the list of acceptable pushed arguments for callbacks
added StretchableLayoutManager and StretchableLayoutResizerBar + renamed LMouseEvent to MouseEvent
LRectangle, added some more methods
lua/LTreeViewItem: sort comparator example
LookAndFeel: updated for SLResizerBar