send_file requires a format #198
Description
Hi. For the most part I've got things working. However, the send_file function requires a parameter of 'format' which isn't in the documentation. I'm sending a PDF file, and I've tried using both 'pdf' and 'PDF' but for some reason by the time it arrives on my Kindle the formatting has been completely changed. Obviously something is happening at the Kindle end, but I wondered if there was any other additional settings that I should look at/could adjust that might resolve the issue?