* Get rid of every single `.Scratch`
* Bump KaTeX from 0.15.3 to 0.15.6
* Bump Fuse from 6.5.3 to 6.6.2
* Add cache busting to search indexes
* Improve search results in general
* Overhaul image processing
* By default, use `webp` as an extra image format conditionally (Hugo 0.83+)
* Other minor changes
