* Lossless image optimization (using ImageOptim).
This shouldn't change the visual appearance of any images. ImageOptim
was run with the highest compression setting except that JPEG metadata
stripping was disabled because some users prefer to avoid stripping
JPEG metadata.
* Update READMEs that have Changelogs for themes impacted by lossless image optmization change.
* Initial commit
* Bump version; remove table styles
* Add credits for base theme
* Remove unnecessary theme.json properties
* Tidy up serif-blue json file
* Add font credits
* Remove theme, ref and id attributes
* Move footer to pattern
* Tidy up misc formatting
* Move 404 content to pattern
* Make no results content translatable
* Small tweaks before release
* Add CSS for mobile nav spacing
* Convert images to webp
* Add image credits
* Remove queryIds
* Update Requires at least version
