Add specialization of ConstructionTraits for Richardson
requested to merge simon.praetorius/dune-istl:issue/missing_richardson_construction_traits into master
Summary
This MR adds a missing specialization of the template ConstructionTraits for the sequential preconditioner Richardson.
Details
Since Richardson does not provide a matrix_type, also the SmootherTraits and DefaultConstructionArgs must be specialized.
Edited by Simon Praetorius