message: moved extensions to plugins
diff: @@ -6,6 +6,7 @@ import { merge } from "../utils.js";
  const defaults = {
  extensions: [".njk"],
  options: {},
  + plugins: {},
  };
  export default function (userOptions) {
  @@ -14,9 +15,8 @@ export default function (userOptions) {
  return (site) => {
  const nunjucksEngine = new NunjucksEngine(site, options.options);
  - const nunjucksExtensions = options.options.extensions ?? {};
  - for (const name of Object.keys(nunjucksExtensions)) {
  - nunjucksEngine.engine.addExtension(name, nunjucksExtensions[name]);
  + for (const name of Object.keys(options.plugins)) {
  + nunjucksEngine.engine.addExtension(name, options.plugins[name]);
  }
  site.loadPages(options.extensions, loader, nunjucksEngine);
  