Remove deprecation warning from mapper.update()
In Dune >= 2.8 the mapper.update(gridview) now has to receive a grid view as argument. Add version checks in the places where update is called as Dune 2.7 only implements mapper.update().
In Dune >= 2.8 the mapper.update(gridview) now has to receive a grid view as argument. Add version checks in the places where update is called as Dune 2.7 only implements mapper.update().