wcwitt

## Review checklist for @wcwitt ### Conflict of interest - [x] I confirm that I have read the [JOSS conflict of interest (COI) policy](https://github.com/openjournals/joss/blob/master/COI.md) and that: I have no COIs...

Sorry to be a bit slow here - will finish ASAP

I'll finish this week.

I've now managed to install and run the Dummy examples, both from the Jupyter notebook and the command line. I don't have a VASP license, so I can't verify those...

I've reviewed the changes - happy for publication at this stage.

## Review checklist for @wcwitt ### Conflict of interest - [x] I confirm that I have read the [JOSS conflict of interest (COI) policy](https://github.com/openjournals/joss/blob/master/COI.md) and that: I have no COIs...

I see there has been some progress here (https://github.com/JuliaPackaging/Yggdrasil/pull/5130), but I can't tell what, if anything, still needs to happen. Any advice?