Editorial commits are all marked as such and contain no non-editorial changes. The tools for compiling ebook files are available at https://github.com/standardebooks/tools, so creating your own versions with only the work you're interested in is straightforward (and can be at least partially automated).
Unless I'm misunderstanding your comment, this feature is actually included in the latest EAP/beta releases[1]. There is discussion of it at the bottom of the issue you linked.
Yes, that's it. Judging from the screencast, I will continue using lazygit for that though. Not a fan of all the clicking. Hopefully there will be a keystroke available for it.
