Calibre 2.84 was launched today by developer Kovid Goyal, who managed to update the Kindle driver to allow users also to delete the thumbnails of the books that are deleted from the system directory, and improved conversion by making use of the same regexp (regular expression) engine that’s being used by the Edit Book tool, which appears to offer better support for Unicode characters. Talking about Edit Book, the tool received new keyboard shortcuts, namely Ctrl+{ and Ctrl+}, which let users jump directly to opening and closing tags. Moreover, the fetch-ebook-metadata component now has a new option to allow the use of only a single metadata plugin, a new API was added to more easily pre-process image data in recipes, and the First Things news source was added by John Hutson.