Integration of backward-cpp

[kurpicz]

Integrate better stack trace provided by backward-cpp

[Hespian]

I think @niklas-uhl has an MPI version of backward-cpp?

[niklas-uhl]

Yes, its not much, but it also outputs the rank together with the stack trace and ensures that the stacktraces of distinct ranks are not interleaved. It should be fairly easy to integrate, I will have a look at it.

[niklas-uhl]

This is something that the user may easily do if they want themselves. We should recommend bakward-mpi in the README and show how to enable it alongside KaMPIng. (see #46)

Also, for better integration one want's kamping-site/kassert#47.