Core Changes
- Add missing nomodule polyfills and suggest using features only up to ES2019 for browser compatibility: #15772
- Bug fix: Font optimization: #15644
- Progress bar for static build: #15297
- Incremental static generation and regeneration in build output table: #14365
Misc Changes
- Test that overlay appears: #15850
Credits
Huge thanks to @Timer, @kripod, @prateekbh, @gelbartj, and @darshkpatel for helping!