Simple, still works, hoping for update

This may have in part been abandoned in favor of Gutenberg, but I would like to politely beg that this be updated to work without having to install the old REST API plugin. And perhaps review the code and update anything else that needs a refresh.

I understand that many may not see a point. If you have to edit a post, edit it in the back-end. Or, there are a couple of other front-end editing options. But, I have a minimal website (all text) and I want members to be able to edit their plain text posts from the front-end. This works extremely well for that. I should add that I also use a minimal, non-full-site editing theme. I’m sure that helps as I assume this may not work with new block type themes.

Please, if the original author cannot due to other more important projects, could someone adopt this?