* 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.
Initially intended as a part-fix for #3134 to enable child themes to swap typefaces that get included more easily, this also extends that change across to many themes using the common patterns.
It explicitly does not change the following themes:
Spearhead (uses different endpoint and method)
And the following themes that have multiple functions that generate typeface includes so as to avoid confusion:
* canard
* gazette
* illustratr
* publication
This PR should remove all Headstart Annotations from themes in this repo.
Why? Headstart annotations stored in WP.com themes are generated, tested, and sent for translation via WP-CLI scripts running on subversion-ed WordPress sandboxes. I recently updated Headstart annotations for our 20+ recent themes in order to correct some issues in our FSE Plugin and Page Layout feature. When discussing how to get these annotations updated in this themes repo @michaeldcain and came up with two options.
1. Copy-paste back into the affected themes in this repo.
2. Just remove all the Headstart annotations from this repo.
The second option seemed the simplest. It leaves **all** Headstart annotations on WP.com "ignore-able" for this GH repo and reduces the chance of Headstart annotations becoming out of date in this GH repo, potentially reducing future errors.
* Remove empty CSS selectors.
* Fix RTL styles for large quote blocks.
* Remove incorrect file button hover styles.
* Add overflow auto to preformatted and code blocks.
* Correct centred styles for widgets.
* Increase font size of comment widget.
* Remove margins from recent posts widget when displayed as grid.
* In themes RTL styles, remove border from block quote.
* Update separator styles so the front-end and back-end match
* Update table styles in the editor to match the front-end
* Update code styles in the editor to match the front-end
