Quadratic promotion trickling down to children
This relates to the closed issue #26 (closed).
Using the tutorial data, I want to change ACL mesh to quadratic by quadratic promotion. One possibility is to select the parent in the resource (volume 4) and promote to quadratic and all children are updated to be quadratic. This way region definitions are not lost. Another possibility is to copy the parent in the resource, promote to quadratic and transfer the annotations of the other resource. The latter also have other uses, e.g. transfering annotation from coarse to fine meshes (which I believe we discussed).