1.3.1

• Flags LayoutFlags.LAY_HGROW/LAY_VGROW have been implemented. When these flags are enabled, the size of the item for the axis specified by 'laySetSize' will be considered the minimum size necessary, and the item may grow if the content requires so.
• Added layGetFlags which allows to retrieve item's flags
• Fixed invalid growth behaviour when grow factor is set to 0.