This PR adds logic in the regridding to set the validities of all grid functions to be 'interior'. Grid functions which have prolongation set to 'no' should instead be set to 'nowhere', but this is not yet implemented.
This PR adds logic in the regridding to set the validities of all grid functions to be 'interior'. Grid functions which have prolongation set to 'no' should instead be set to 'nowhere', but this is not yet implemented.