CollectTransforms : Added a node for collecting transforms from different contexts and storing them as attributes (#2708).
CollectPrimitiveVariables Added a node for collecting primitive variables from different contexts (#2708).
PrimitiveVariableExists : Added utility node for querying the existence of a primitive variable (#2708).
Light : Fixed bounds computation (#2725).
AnimationGadget : Fixes crash caused by dragging keys on adjacent frames (#2720).