Peter A. I. Forsyth

A key feature of `xarray.Dataset` is that all dimensions of the same name must have the same sizes across DataArrays. For this reason, a Dataset schema that requires different sizes...

Cattrs (https://pypi.org/project/cattrs/) is a powerful library for automatic serialisation/ deserialisation of hierarchical data. It seems to me that it could be valuable to use it to implement the various `to_json`...