What this MR does / why does DuMux need it:
This allows the user to develop a domain consisting of multiple stamped images, extending the existing
Notes for the reviewer
Within !3160 the subgrid grid manager is extended to accept 3D "images" using a BinaryMask file. There should be no conflicts, but extending the stamping parts of this MR to the 3D grid should also be possible.
Before you request a review from someone, make sure to revise the following points:
\n character. Make sure there is no
\ No newline at end of file comment in "Changes" of this MR.