Big bugs have been fixed
Fixed a crash when you used the polygon tool.
Fixed 3D vertices preventing you from using sprites as a mask, you had to draw on the corners. You no longer need to do that. It will mask itself automatically without "outside" help.
Furthermore, I also added one more shape-changing feature to the 3D vert tool, which you can change to and back with ALT + 2 and ALT + 1.
I've also changed some other minor things, but they are not noticeable.