[Dune] Tasks for 1.0

[Christian Engwer]

Good morning,

> I worked through the task list from yesterday and flyspray and compared them.
> All tasks due for 1.0 should now be set to 1.0 in flyspray. So please everybody
> go through flyspray and check if this is OK now. Everything that we agreed upon
> for 1.0 should have this tag now or not.

Task #10 is marked as 1.0. I already tried to fix this already, but
this is a big problme, as the fix proposed by Robert does not work in
this case. I can't get the address of the functions in the
implementation, because I only the have the type as a
template-template parameter.

I left the task open (and I also thought I wrote a comment, but perhaps
that was before the flyspray crash...) because it still is a bug, but
it might be very difficult to actually fix it.

Christian