[ddehilster]

Changes

Adds highlightjs-nlpplus, a third-party grammar for NLP++, to SUPPORTED_LANGUAGES.md, plus a CHANGES.md entry. NLP++ is a programming language for natural language processing, open source under the MIT license.

The grammar repo follows the grammar template. Its CI runs the markup tests and rebuilds the CDN files with tools/build.js -t cdn from an extra/ checkout, then checks they match the committed dist/ files. Both pass. The tests also pass locally with ONLY_EXTRA=true npm run test-markup.

Checklist

• Added markup tests, or they don't apply here because... markup tests are in the grammar's own repository (test/markup/nlpplus/). This PR only adds the table row.
• I have read and followed our AI-assisted contributions policy (human review, no slop). The grammar was written with Claude and reviewed by me, and the commit carries an Assisted-by trailer.

🤖 Generated with Claude Code

[ddehilster]

The package now also ships grammars for NLP++'s supporting file formats (dictionaries, knowledge bases, analyzer sequences and parse trees), each with markup tests and its own CDN build. I've added a row for each, all pointing to the same package.