Changelog

[1.3.0] - 2026-08-24

Added

• Direct parent, children, roots, and leaves hierarchy-navigation functions backed by the internal parent index.
• A benchmark-proven confirmation that conj and disj perform well at 10k-member scale, retained as an opt-in benchmark test.
• A generative/property-based test suite using test.check to verify hierarchy invariants across random conj and disj sequences.
• A validate!/valid-hierarchy? diagnostic API for detecting invalid sort-order and containment relationships.
• union, intersection, and difference set-algebra operations for compatible HierSets.
• clojure.datafy/Datafy support and versioned EDN serialization round-trip.
• Expanded API docstrings and new README “Common workflows” examples.

[1.2.3] - 2026-08-17

Fixed

• containsAll is consistent with the hierarchical contains for Java callers: it is true iff contains holds for every element of the collection.

[1.2.2] - 2026-07-12

Changed

• Migrate the build to deps.edn and tools.build, with Leiningen supported via lein-tools-deps.