Also implement the boundarydofs method for dune-functions bases
With this patch, the method works both for old-style dune-fufem bases and for dune-functions bases directly. The distinction is done using some minor SFINAE trickery.
With this patch, the method works both for old-style dune-fufem bases and for dune-functions bases directly. The distinction is done using some minor SFINAE trickery.