Changelog

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

The format is based on Keep a Changelog.

[0.9.0] - 2026-06-15

Replaced the deprecated and unmaintained Viz.js library with the modern, actively maintained @hpcc-js/wasm (WebAssembly-based Graphviz engine) via CDN for faster, more compliant, and robust Graphviz layouts in browsers.
Updated ex_doc to ~> 0.35 in mix.exs.

Integrated svg-pan-zoom for pan-and-zoom support on rendered graphs.
Added :height and :width options to Kino.VizJS.render/2. Accepts integers (pixels) or strings (e.g., "100%").
Redesigned the Smart Cell editor with a dark theme and layout settings for height/width.
Smart Cell dimensions now update the rendered graph reactively without requiring re-evaluation.
Added a toolbar overlay on rendered graphs with Download DOT, Download SVG, and Copy DOT buttons.
Added @spec to Kino.VizJS.render/2.
render/2 now validates the engine name at the Elixir level, raising ArgumentError for unrecognized engines.
render/2 now enforces is_binary(dot_string) via a guard clause.
Smart Cell to_source/1 omits options that match their defaults.
CI now runs mix compile --warnings-as-errors and mix dialyzer. Added _build caching.

Removed sfdp and patchwork engines, which are not supported by Viz.js 2.x.
Error messages from Viz.js are now rendered via textContent instead of innerHTML to prevent XSS.