operators: allow SequenceElementType/IteratorTargetType/CoordinateTargetType to support multiple value sequences
operators: allow SequenceElementType/IteratorTargetType/CoordinateTargetType to support multiple value sequences

mario-campos/clay,aep/clay,iamrekcah/clay,jckarter/clay,iamrekcah/clay,aep/clay,aep/clay,mario-campos/clay,jckarter/clay,iamrekcah/clay,aep/clay,mario-campos/clay,iamrekcah/clay,jckarter/clay,jckarter/clay,aep/clay,mario-campos/clay,iamrekcah/clay,jckarter/clay,jckarter/clay,mario-campos/clay,aep/clay