Version 4.0.0-beta1

Changes since 3.2.6;

• 🔼 Froala Editor version 4!
• 🔼 Ember.js version 4 support!
• 🥇 Embroider Optimized!
• 💥 ember.js and ember-cli 3.20+ required
• 💥 consuming projects must be using ember-auto-import v2
• 💥 languages/plugins/themes options in ember-cli-build.js must now be listed in an array
• 👩‍💻 languages/plugins/themes are now imported using ember-auto-import, might impact build size