Hi everyone, I'm happy to announce that my package ox-leanpub is now available in MELPA.
Ox-leanpub contains Org-mode export backends to produce books in the correct structure and format for publication with Leanpub (https://leanpub.com/). It allows you to write your book entirely in Org mode, and completely manages the production of the necessary files for Leanpub to be able to render your book. I use this package to publish most of my books published on Leanpub (https://leanpub.com/u/zzamboni). You can find full documentation at https://github.com/zzamboni/ox-leanpub (original source is kept in GitLab, but the documentation is more readable in GitHub). Please check it out! Let me know if you have any feedback or questions. I would also like to thank everyone in this community for your support and willingness to answer my questions :) All the best, --Diego