A new processing element has been added: HNW_DISTRIBUTE. This distributes accumulated precipitation over a number of preceeding time steps. This is useful, for example, when one has an hourly file that contains 24 hours sums of precipitation, written as nodata for all time steps and the accumulation on the last time step of the 24 hours period. Since this is implemented as a filter, it is then possible to also add an undercatch correction (and don't forget to re-accumulate anyway in the resampling methods!).