Hello guys! I gladly inform you that with introduction of DRAY it is possible to create self-replicating devices.
Also i present you a most basic replicator https://powdertoy.co.uk/Browse/View.html?ID=1607605

It is possible to create replicator that will replicate itself in any direction, and will be capable of movement.
Go ahead and make something great that can replicate itself, it would be awesome to see!