* 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.
* Winkel: Initial commit.
* Update winkel/style.css
* rename header template and simplify templates
* Winkel: Update header - enable logo syncing, remove navigation font size.
* Winkel: Update theme.json - use a different text color for paragraphs, define navigation font size.
* Refactor so that we can use the header-centered pattern in Winkel
Co-authored-by: Ben Dwyer <ben@scruffian.com>