Bug fixes.
Great release with the Z elevation! How about adding an option for separate Z elevation to each of the four vertices that form a sprite quad? Since it's just modifying the rendered display output for the sprite, it should not cause other changes, but different display of the sprite/quad? I will also add to requests page.
This is actually very complicated for the same reason described here: construct3.ideas.aha.io/ideas/C3-I-683