Rework show_images of run_depthmap, improve UI

Large refactor part, may be broken

Also fix downloading models

Author: semjonsona

README.md

@@ -21,6 +21,9 @@ video by [@graemeniedermayer](https://github.com/graemeniedermayer), more exampl
 images generated by [@semjon00](https://github.com/semjon00) from CC0 photos, more examples [here](https://github.com/thygate/stable-diffusion-webui-depthmap-script/pull/56#issuecomment-1367596463).
 
 ## Changelog
+* v0.3.13 
+    * Large code refactor
+    * Improved interface
 * v0.3.12
     * Fixed stereo image generation
     * Other bugfixes