[Request] Add run ahead and adjustable contrast, gamma, color saturation

[Weltraumeule]

Hello, I have to requests.
Can run ahead like in bsnes be implemented in snes9x?

Also bsnes has a bit better contrast and colors. I can achieve this with shaders in snes9x. However, would it be possible to achieve this without shaders? Just by snes9x itself? Or have a contrast, gamma, color saturation option in graphics menu?