0.3.0 "delete" in history view does not delete the image

Thanks for making a really nice distribution for this, very well done! Looking forward to seeing what happens in future updates.

I noticed in 0.3.0 image history is saved in "~/.diffusionbee/images" in the home directory, but many users may not know this. As they use SD over time, this directory will keep growing and getting larger.

I would suggest that pressing "delete" on an image in the "history" tab also deletes the corresponding images in this folder. Alternatively, you may also want to prefix the images with a directory named after the date they are created or something, so it's easier to find/delete old content.