prevent replacing torch_randn globally (instead replacing k_diffusion.sampling.torch) and add a setting to disable this all

* numpy deprecation warning fix. Alternately, you could also specify float

* needs a piexif module install
* dumps the info in an Exif "UserComment"
* update to webui.bat

Add minimum requirements for skimage version

Complete cross attention update

In my defense I was doing this on my phone.

Related to https://github.com/AUTOMATIC1111/stable-diffusion-webui/issues/393

moved stable diffusion dependencies into requirements.txt
added checkout with specific commit hashes to all external repos

 Embeddings directory can't be found if running webui.py from another directory (+potential fix) #374

Fix multiple grammar & spelling errors in ReadMe

Adds NSFW content filter option

Fix #368

Swap width and height sliders in the UI

made launcher always install requirements
bumped basicsr to 1.4.2 because someone wanted it

 Codeformer face restoration not working: AttributeError: module 'modules.shared' has no attribute 'device_codeformer' #348