With Squoosh & imagemin

New Features:

Notes:

• image-minimizer-webpack-plugin replaced by pure Squoosh & imagemin
• Gulp replaced by pure chokidar
• ShellJS replaced by pure Node.js
• images are now automatically included when you put them in the ./src/img directory; no more import './src/img/test.jpg'; cmd necessary in index.js
• webpack, Squoosh, imagemin, copyfiles & jekyllBuild are all running asynchronously now
• automated port number of the webpack-dev-server now logged
• Gemfile removed; to add Jekyll plugins look here
• ...