Currently, in order to represent data relationships, users can only use quasiordered sets, ie taxonomies or sections, with predefined structure. Support for more intuitive relationships and with ease of ad-hoc structuring could come with partial ordered sets, using references. Hierarchies would still work using a common codebase, simply by continuing to model data types without their antisymmetric relation and using similar template logic.

This provides a deep fix for #246.