Ovals with even sizes get rounded to odd sizes
Basically, if you were to do `oval(0, 0, 4, 4)`, you'd get a circle 5 pixels wide instead of 4. This scales to any size.

![image](https://user-images.githubusercontent.com/3710677/184541137-bbb79fb8-6f62-402b-8859-b7b59079250b.png)
