Is there developer documentation for the Twine 2 system, and if so, where does it live?
I'm looking specifically for docs that would help me add features to the editor UI, like image upload, or saving stories to a remote server instead of localStorage. It would be great to also have more details on how the code is organized, what the core data structures are, how responsibilities are divided between the editor UI and the story formats, etc.
By the way, I'm willing to help write it if it doesn't exist, as I dig into these things, but was hoping to save myself some time ... :)
Best,
Ian