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

configurable masks color and default brush color

Prompt parser: Account for empty field in alternating words syntax