Hello everyone!
One thing that's annoyed me since I discovered koreader is that it can't read metadata from .cbz files ("because muPDF doesn't support it", and "there's no standard"). Almost all of my cbz files use
ComicInfo.xml.
I decided to take it upon myself to make a plugin to do this using custom metadata. It's still early days, and only supports the Title, Series, Series Index, description, and authors fields so far.
I've uploaded my code here:
https://github.com/NightQuest/comicmeta.koplugin
Figured I'd share since I know other people have ran across the same issue. :3