make the PrKalmanFilter a multi transformer
Needed in order to have access to all elements of the output, if it is combined e.g. with the PartialChiSquared.
Needs Moore!1666 (merged) and Alignment!302 (merged)
Edited by Andrii Usachov
Needed in order to have access to all elements of the output, if it is combined e.g. with the PartialChiSquared.
Needs Moore!1666 (merged) and Alignment!302 (merged)