Copper Golem Sorting Improvment

When a copper golem sort items into chests, it puts the items into the first available slot, and doesn't stack them to the preexisting item stack. This makes the sorting feature of the golems a little less effective as the player will still need to put the items into a stack that was already there. I think that if the golems put the items into the first ready stack, instead of slot, it would make the copper golem more effective.