new AVS with mouse/kb support

[justin]

I made an AVSpaint preset, haha.
Turn off clear framebuffer, set blend mode to additive, and
superscope with n=2:

code:


x=if(i,getkbmouse(1),lastx);

y=if(i,getkbmouse(2),lasty);

red=getkbmouse(3);

blue=red;

green=red;

lastx=if(i,x,lastx);

lasty=if(i,y,lasty);

ha ha.