Merge extension of the dual basis functions in release branch
Some cooperation partners of mine are using Dune 2.4 and need this feature
which allows to switch the Dual*1FiniteElement
to be biorthogonal only on
the element faces.
Some cooperation partners of mine are using Dune 2.4 and need this feature
which allows to switch the Dual*1FiniteElement
to be biorthogonal only on
the element faces.