Sonic 2 v0.9.19

Knuckles' signpost spin now uses the original lock-on colours throughout its native frames, including Tails' face and the blurred views. The original artwork, pole, geometry and spin sequence are preserved.

Fresh launcher settings use Fit to screen; existing saved aspect, mod and input choices are preserved. Existing imported and companion special-stage support limits remain.

QA credit: TheGabeMaster29.