Some mechanical changes:
- From Yarn to NPM by popular demand (although you can easily switch to Yarn if you prefer)
- Removed Gulp build step in favour of using Eleventy's built-in watcher and re-compilation
- Moved from Sass to PostCSS for CSS pre-processing
- Added Netlify Dev instructions and makes use of some of its facilities
- Simplifies serverless function pipeline through Netlify Dev
- Use of Netlify redirect rules for proxies
...And a multitude of typo fixes 😳