v4.0.0 release requirements

[fdintino]

• documentation
• github actions workflows to build, run tests, and lint
• error handling: report line numbers from template runtime errors
• Environment finalize function #6
• installJinjaCompat missing features
  • dict methods
  • list methods
• verbatim tag #2
• script for pregenerated templates
  • (maybe?) option to generate templates as ESM and commonjs
• backwards compatibility for legacy asyncEach and asyncAll tags
• core filters
  • filesizeformat filter #3
  • random
  • title filter #4
  • truncate filter #5
  • urlize
  • unique
  • min, max
  • groupby
  • select, reject, selectattr, and rejectattr filters #7
  • feat: tojson filter #8
  • wordwrap

[uncenter]

Would also love to see officially maintained developer tooling (e.g. a VS Code extension, formatter integrations with Prettier/Biome)! There are a few here and there, but most are unmaintained or made for Jinja2 rather than Nunjucks itself. Happy to help in any way I can!