[Dune] Dune 2.11 available

[Oliver Sander]

Dear all,

the 2.11.0 release is now available. It brings a number of improvements 
in the core and staging modules, for example several new finite element 
bases in dune-functions. It also includes the three modules 
dune-foamgrid, dune-gmsh4 and dune-vtk for surface and network grids, 
and improved Gmsh4 and VTK file handling, respectively. See the release 
notes for details and for links to the release tarballs. You can also 
get the release by checking out the v2.11.0 tags via git.

As a change to the overall structure, several features from the 
dune-typetree module have been moved into dune-common. As a consequence, 
dune-functions’s dependence on dune-typetree has been downgraded from 
required to optional, and will be removed completely in the 2.12 
release. Codes that used dune-typetree only through dune-functions can 
safely drop it.

Please go and test, and report any problems that you encounter.

https://www.dune-project.org/releases/2.11.0/

Thanks to all who contributed to this release!

Best,
Oliver