Build Awesome (11ty) v4.0.0-alpha.9

# To install, choose one of these:
npm install @11ty/eleventy@4.0.0-alpha.9 --save-exact
npm install @awesome.me/buildawesome@4.0.0-alpha.9 --save-exact

Full v4 Milestone: https://github.com/11ty/buildawesome/milestone/46?closed=1
Full Changelog: v4.0.0-alpha.8...v4.0.0-alpha.9

---

• Risky, albeit not a breaking change Nunjucks users please take extra care when upgrading to this version. We implemented a somewhat large refactor to our Nunjucks fork. Using new fully-async compatible Nunjucks prerelease v4.0.0-alpha.3. No longer necessary to use async specific tags for {% set %} or {% for %}. You can now use macros with async child content. Fixes #4305 #3788 (and so many other issues!)
  • 11ty/nunjucks v4.0.0-alpha.2: https://github.com/11ty/nunjucks/releases/tag/v4.0.0-alpha.2
  • 11ty/nunjucks v4.0.0-alpha.3: https://github.com/11ty/nunjucks/releases/tag/v4.0.0-alpha.3
• Improvement to error messaging shown when throwing errors in buildawesomeSchema callbacks. See https://www.11ty.dev/docs/data-validate/
• Fixes missing README on npm package for @awesome.me/buildawesome #4301
• Adds BUILDAWESOME_SKIP_BUNDLE_PLUGIN environment variable to allow manual addition of @11ty/eleventy-plugin-bundle
• Fix: Merge Array and Object buildAwesome* data with eleventy* counterparts (important for: eleventyComputed, eleventyExcludeFromCollections, and eleventyImport) #4302
• Breaking change (very low risk): Changes default emitter mode for events to be sequential instead of parallel #4293
• Upgrades Bundle Plugin from v3.0.7 to v4.0.2, review release notes here:
  • https://github.com/11ty/eleventy-plugin-bundle/releases/tag/v4.0.0
  • https://github.com/11ty/eleventy-plugin-bundle/releases/tag/v4.0.1
  • https://github.com/11ty/eleventy-plugin-bundle/releases/tag/v4.0.2