Revision history for Game-RaycastFOV

2.02    2021-03-13
        Add sub_circle(), update swing_circle() to call that.
        circle() now only passes unique points to the callback.
        shadowcast() "blocked" callback is now passed the dx/dy values.

2.00    2020-03-27
        Add shadowcast support. And some more tests.

1.00    2020-02-16
        First version, released on an unsuspecting world.