Calibre 2.44 released with new features and bugfixes
Allow setting the cover for a book from one of the book’s formats by right clicking on the format in the Book details panel. Allow drag and drop of all file types onto the book details panel and the format list in the edit metadata dialog. Edit Book: When inserting an image into the current document, add a button to paste the image from the clipboard Edit Book: Change the suggested prefix for bulk renaming of files depending on the type of files being renamed.