Wish: clean upscale for alpha channel too

[jason.fletcher-9229 (nuclearsugar)]

Alpha support has been added in version 5.2

Topaz Video AI 5.2.1

Hello everyone, Today we’re excited to release Video AI 5.2! Windows Mac - DMG | PKG This release includes the new Rhea Enhancement model, Pro seat management, Frame Interpolation for After Effects, Alpha layer support, and many UI and backend fixes. Rhea Enhancement Model Rhea represents a combination of Proteus and Iris. The model is intended to be more accurate in preserving fine details across a wider range of subjects, while also handling text in a less destructive way. This mode…