Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[0.2.0] - 2026-04-10

Breaking: Algorithm.feedback_op (int) replaced with Algorithm.feedback_edge (Tuple[int, int]) representing (source, target). Most algorithms have source == target (self-feedback). Algorithms 3 and 5 (DX7 algos 4 and 6) now correctly represent cross-operator feedback.
Breaking: get_feedback_op() replaced with get_feedback_edge().
Breaking: OperatorGraph.set_feedback(op, level) signature changed to set_feedback(source, target, level).
Breaking: OperatorGraph.get_feedback(op) signature changed to get_feedback(source, target).
Breaking: OperatorGraph.from_matrix() feedback parameter changed from Dict[int, int] to Dict[Tuple[int, int], int].

DX7 algorithm 4 (index 3) feedback is now correctly modeled as op 3 -> op 5 instead of a self-loop on op 5.
DX7 algorithm 6 (index 5) feedback is now correctly modeled as op 4 -> op 5 instead of a self-loop on op 5.
OperatorGraph render methods now correctly route cross-operator feedback: the source operator’s output is written to the feedback buffer and the target operator reads from it.

Initial release.