v2.0.0 release

.gitignore

@@ -1,3 +1,7 @@
 node_modules/
+TODO.md
 .cache/
-js/tmp/
+js/tmp/dev.html
+.claude/
+CODESTYLE.md
+dev.html

CHANGELOG.md

@@ -0,0 +1,28 @@
+# Changelog
+
+## [2.0.0] — 2026-04-07
+
+### Breaking changes
+
+- Series data keys renamed: `x`, `y`, `z` → `a`, `b`, `c`
+- `ternaryAxis` structure changed — each axis (`a`, `b`, `c`) is now configured as a separate key under `ternaryAxis` instead of a flat options object
+- `chart.ternary` now accepts a configuration object in addition to `true`
+
+### New features
+
+- **TypeScript** — type declarations included in the package (`types/index.d.ts`)
+- **JSDoc** — all public options documented with JSDoc
+- **`componentColors`** — color each axis component independently; supports `a`, `b`, `c` color keys and `alpha` for blending
+- **`minSize` / `maxSize`** — control bubble size range for scatter series (replaces ad-hoc sizing)
+- **`median`** — configure the median lines as `boolean` or an object with style options (`color`, `width`, `dashStyle`)
+- **`ternaryAngle`** — control the projection angle of the triangle
+- **`title.position`** — set axis title position (`corner` or `side`)
+- **`title.offsetDirection`** — control which direction the axis title offsets from the axis
+- **`title.margin`** / **`labels.margin`** — fine-tune spacing between titles, labels, and the triangle
+- **`gridLineDashStyle`** — dash style support for grid lines
+- **`chart.sumTo`** — normalize data to a sum other than 100
+- **`lineColor` / `lineWidth` / `lineDashStyle`** — style the triangle sides (axis lines) independently from internal grid lines; previously both used `gridLineColor` / `gridLineWidth`
+
+---
+
+## [1.0.0] — initial release

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2025 Black Label
+Copyright (c) 2025-2026 Black Label
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

RELEASE_CHECKLIST.md

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+# Release checklist
+
+Steps to follow before every `npm publish`.
+
+## 1. Verify
+
+- [ ] `npm test` — all tests pass
+- [ ] `npm run build` — build passes, no lint/TS errors
+- [ ] `js/ternary-plot.js` header — correct version and year
+- [ ] `package.json` — correct `version`
+- [ ] `CHANGELOG.md` — entry exists for this version with today's date
+
+## 2. Preview what npm will publish
+
+```bash
+npm pack --dry-run
+```
+
+Confirm only `js/ternary-plot.js` and `types/` are included. No source files, no `dev.html`, no test files.
+
+## 3. Git
+
+```bash
+git add .
+git commit -m "Release v2.0.0"
+git tag v2.0.0
+```
+
+Merge or rebase onto `main`, then:
+
+```bash
+git push origin main
+git push origin v2.0.0
+```
+
+## 4. Publish
+
+```bash
+npm publish
+```
+
+## 5. After publish
+
+- [ ] Verify on [npmjs.com/package/highcharts-ternary-plot](https://www.npmjs.com/package/highcharts-ternary-plot) — correct version, files, readme
+- [ ] Create GitHub Release for tag `v2.0.0` — paste CHANGELOG entry as description
+- [ ] Update CDN link in `index.html` if the version number changed (currently `@2.0.0`)