Check that phenotypic features are descendants of *Phenotypic abnormality*

[ielis]

For correctness of the results, we should ensure that all analyzed phenotypic features are descendants of Phenotypic abnormality.

This check is best done at the time when Sample is created. We must ensure that Sample is instantiated from sanitized/valid data.

In the context of the code base, the validation should be done in sumsim.io.read_phenopacket('path/to/phenopacket.json'), right after loading phenopacket. It is a bit ugly for "production", but acceptable for prototyping.

[ielis]

The solution depends on if all phenotypic features are indeed descendants of Phenotypic abnormality, or if some features, such as Maternal fever in pregnancy are allowed to be a subclass of past medical history.

[bcoleman96]

I'm leaving this issue open for now to be fixed when I update to the latest version of HPO where this is not an issue.