subtitle-tools/CHANGELOG.md

Changelog

0.2.0 - 2026-09-02

• Added bounded flat-profile TTML import/export, timeline cue insertion, duplication, split/merge/delete, text transforms and frame snapping.
• Added immediate media playback plus cancellable background waveform extraction, click/keyboard waveform navigation and stale-result suppression.
• Declared accurate subtitle/media input, export and optional browser capability profiles for Toolbox handoff.

0.1.0 - 2026-09-01

• Added bounded SRT, WebVTT and ASS parsing, cue editing and explicit conversion.
• Added timing shifts, stretching, frame-rate conversion and configurable overlap, duration, layout and reading-speed diagnostics.
• Added local revision comparison and browser-native playback with bounded waveform extraction.
• Added Toolbox integration, offline shell, cross-browser tests and deterministic release packaging.