I don't really need unsafe but I do enjoy using it. In particular, `unwrap_unchecked` is nice for when I'm 100% sure that an unwrap can't fail. I don't see any

I don't really need unsafe but I do enjoy using it. In particular, `unwrap_unchecked` is nice for when I'm 100% sure that an unwrap can't fail. I don't see any reason to leave that to the compiler to figure out.