Transition authors to versions
I think that the usage of authors is, at best, imprecise. These are also translators, or different scholarly editions of a text. So, I think we should change the language of author, author_id, and the authors list to use "version" instead and thus spread across a variety of different use cases.
Originally posted by @signebedi in https://github.com/signebedi/gita-api/issues/35#issuecomment-1920470289