Is there a way to change the chapter number download? #100

Hi,

I am working on a project that would automatically download webtoons and sync them with my color e-reader. I am using a combination of an rss feed, this downloader tool, and calibre to bring it all together. I noticed that the urls for each chapter has an episode number (e.g. episode_no=300), and I was attempting to grab the episode number from the url from the rss feed. But on the actual webtoon page it shows a different chapter number (e.g. #289) and this chapter number is what is used in your tool. Since the chapter numbers differ this is making my project impossible beside using the --latest tag. Is there anywhere I could integrate this tool with the url based episode numbers?

Thanks!