Add blackhole, a delete element, in contrast to cloner

[maulshh]

hey, i think you need to create a black-hole element as it'd help to create a moving animation. you see i wanted to create a flowing animation, like water or rain, but the elements a cloner produced would easily fill the canvas.

[cameracameraboo23]

Yeah we need this

[ghost]

Yes please!

[kennyt08]

Cool idea