Finally! I got the new beta...and now the publishing works property.
So as announced, here is a demo.

Download

Keys:

mouse_left: Paint
mouse_wheel: change brushsize
N: New Image
S: Save Image

PS: I worked already on some other functions but they are not the way i would like to show you.

edit: I am so sorry, I swear that the save function worked before...with the new beta it writes confusing stripes!