v2.1.0

2.1.0 (2026-09-23)

Features

• prefix emitted heading IDs (#410) (1667e19)
• support heading level offsets (#409) (aceafd3)

Bug Fixes

• ensure unique heading IDs (#408) (e890ccb)
• parser: trim only ASCII whitespace at block boundaries (#414) (7eda5a4)

Performance Improvements

• node: keep the reusable renderer's output buffer between calls (#412) (1a4b606)
• parser: find NUL bytes and the first ]: in one root scan (#413) (c12698b)
• renderer: gate the GFM tag filter on the first name byte (#411) (6833228)