* 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.
* Remove unneeded CSS from Archivo
* Add full stop to Bitacora description
* Remove empty line from Blockbase CSS
* Add Course to dotorg deploy list
* Change order of theme tags in Erma
* Change order of theme tags in Exmoor
* Update order of theme tags
* Remove font-smoothing from Iotix
* Small tweaks like updating theme tag order
* Fix Iotix style.css spacing
* Add font-smoothing back to Archivo
* Pendant: replacing CSS with theme.json settings for link elements
* Bump min version for Pendant to 6.1
Co-authored-by: Sarah Norris <sarah@sekai.co.uk>
