Release Notes for v0.5.6.2

Added option for "Initiator Property" to the Conditional Expression Builder dialog
Added options for ID of "self" and "initiator" references to the Conditional Expression Builder dialog
Added operator option for "contains at least" to the Conditional Expression Builder dialog
Fixed issue where custom properties were incorrectly being shared between entities of the same type in the Map Editor
Fixed issue with the "Start Dialogue" scripting function not triggering properly in some cases