don't save incomplete images

Update README.md

Increase `s_churn` max value

Add option for `s_tmax`

Correct install instructions on linux and provide additional required apt packages
Fixes #12351

add new gradio themes

only need Reload UI not Restart

Add TAESD(or more) options for all the VAE encode/decode operation

Always show extra networks tabs in the UI

option to keep multiple models in memory

Hires fix change checkpoint

Add tab and carriage return to invalid filename chars