Fix snow (and many other partial blocks) so that rectangles that are not visible from the outside are properly culled. Previously only half of these partial-height vertical rectangles were culled. Testing a snowy mountain, this led to a 12 percent reduction in the number of triangles output, with no visual difference. (Thanks to ilovesoggycate for reporting this bug.)
Fix Budding Amethyst so that it doesn't emit light. (Thanks to ilovesoggycate for reporting this bug.)
Note that Fusion 360 can be used to clean up detailed Mineways models for 3D printing.