Release v0.9.0

[bhensley5]

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.

[Unreleased]

[0.9.0] - 2026-05-26

Added

GQL Beta

• Read-only GQL/Cypher-style query strings. Added execute_gql and explain_gql in Rust, executeGql / executeGqlAsync and explainGql / explainGqlAsync in Node.js, and execute_gql / explain_gql on both Python sync and async APIs.
• Graph-row-backed execution. GQL Beta now lowers into the same shared graph-row executor as native APIs, so required matches, OPTIONAL MATCH, bounded variable-length paths, path values, row operations, cursors, caps, explain output, and connector result shapes share one implementation.
• Supported read syntax. Added GQL support for MATCH, OPTIONAL MATCH, node and edge labels, relationship directions, finite bounded path quantifiers, WHERE, RETURN, aliases, scalar expressions, path functions, ORDER BY, SKIP / OFFSET, LIMIT, parameters, and explicit full-scan opt-in.
• Path result values. Returning path aliases can now produce node IDs, edge IDs, optional hydrated elements, length, start_node, end_node, nodes, relationships, node_ids, and edge_ids values across Rust, Node.js, and Python.

Changed

Query Execution

• Native graph-row substrate is now shared public API machinery. Structured graph-row queries now cover optional groups, bounded paths, ordering, cursors, compact rows, selected-field projection, vector opt-in, and truthful explain/profile summaries across all connectors.
• GQL public naming is unified around execute/explain. The final advertised GQL Beta surface uses execute_gql / executeGql and explain_gql / explainGql, matching the read execution model and leaving mutation-capable naming room for a later beta.
• Public docs position GQL as a first-class query option. README, API reference, and docs/gql-subset.md now document when to use native function APIs versus GQL Beta query strings, the supported subset, and intentionally unsupported beta features.

Fixed

• GQL planner and runtime parity. GQL reads now match native graph-row behavior for optional null extension, path expansion, relaxed self-loop distinctness, temporal and prune visibility, stale index verification, row caps, cursor validation, ordering, projection needs, and vector omission defaults.
• Connector parity. Node.js TypeScript declarations, Python stubs, async wrappers, and tests now expose the same GQL Beta behavior as the Rust core.