This is lovely! I'm playing with a gamepad and I'm really confused, why have you locked movement to 8 directions? Only getting half the benefits of a gamepad :[
(edit, same on windows)
Tried the latest version (demo, linux), no, I can still only go in 8 directions. I should add that I didn't notice this was going on for a while when I started playing, it still has variable speed, I think, so it feels more fluid than it possibly is.
Another issue, file-roller (which is standard) has trouble unpacking the .gz. It would show a tar file inside, named the same as whatever the .gz was called, and it wouldn't be able to open that tar. Changing the extension to .tar.gz fixes the problem.