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.

[0.1.0] - 2026-02-14

Workflow definition model with JSON schema validation.
Five node types: start, task, approval, decision, end.
Conditional transitions with 9 operators (eq, neq, gt, gte, lt, lte, in, not_in, contains).
Workflow versioning via semantic version strings.
Structural validation (single start, end nodes, valid references).
WorkflowEngine with start(), submit_event(), and replay().
Idempotency key support for event deduplication.
Deterministic replay from event log.
Event log with type, timestamp, payload, and idempotency key.
Clear exception hierarchy for all error conditions.
Example workflow JSON and runner script.
GitHub Actions CI with lint, typecheck, and multi-version tests.
42 unit tests with 97% code coverage.