Require dune-assembler

dune.module

 Module: dune-fufem
-Depends: dune-common (>= 2.9) dune-geometry  (>= 2.9) dune-grid  (>= 2.9) dune-istl (>= 2.9) dune-localfunctions  (>= 2.9) dune-functions (>= 2.9) dune-matrix-vector (>= 2.9) dune-vtk(>= 2.9)
+Depends: dune-common (>= 2.9) dune-geometry  (>= 2.9) dune-grid  (>= 2.9) dune-istl (>= 2.9) dune-localfunctions  (>= 2.9) dune-functions (>= 2.9) dune-matrix-vector (>= 2.9) dune-vtk(>= 2.9) dune-assembler(>= 2.10)
 Version: 2.11-git
 Maintainer: Carsten Gräser (graeser@math.fau.de)
 Suggests: dune-alugrid dune-subgrid