Add test. Some cleanup still left of the model.
Go for simple approach.
Start on new hierarchy implementation.
Do all matching of hierarchy in the provider.
Generate correct JSON; Fix git provider.
Tidy up.
Add `in_parent` and `has_parent` bools for github.
Tidy up.
Change variable names.
Merge pull request #82 from pretenders/dev/70/alex_hierarchy

Dev/70/alex hierarchy