This change allows lists of prompts to be processed. The list can be typed/pasted into a textbox or loaded from a text file (which populated the textbox). The existing "Image Count" slider allows the list to be processed multiple times. Set it to 10 and run it against 9 prompts, and you'll get 90 images.

I also added an option under advanced to allow the seed to be kept the same while processing the list or to be iterated. If the option is disabled, we still iterate, but only after processing the whole list. This is useful if you want a list of prompts run against the same seed, such as when trying minor changes to a prompt.

In the future, it'd be nice to parse arguments, so that each prompt could specify sampling steps, diffuser, etc, similar to what the log writes out. (Size would be nice as well, but that would get messy with grid generation).

I tried to keep the change as clean as possible. I did have to refactor process_images to accept multiple prompts, which seemed better than making a second version that had to be maintained. I also ignore the multi-prompt setting, as that would get complicated, quickly, and also because in general, I imagine prompt lists to be used for things that are a little too complicated for the two types of multi-prompt.

Thanks, and thanks for all the work in maintaining all this!