Version 1.52.0 - 17 May 2021
Detect Kindle Previewer versions up to 3.52.1. Version 3.52.1 removes YJImageLayoutEnhancer.
Better preserve the formatting of books from
Standard Ebooks by allowing <br> elements with display:none styling. That styling was being removed by the plugin as part of the work around for a different problem.
Eliminate unnecessary Kindle Previewer conversion retries for unsupported book types such as comics.