Remaster of the Antartica 2D scroll engine in Scratch 3.0.
I rewrote the engine in Scratch 3.0 because it appears that unfortunately projects based on the old Antartica, which was coded in Scratch 2.0, would fail to save entirely. This caused me to lose 6 hours of work, so let's make sure it never happens again! I haven't imported ANY sprites from 2.0 what so ever so that this bug doesn't occur.
