Bump minimum CMake version

Before mip-map loading refactor

Switch to QT 5.15

Before merge Drawing primitives with screen coordinates #2324

GLideNUI-wtl: Fix MSAA saving and Dithering checkboxes

Enable FBInfo for Dr Mario and FlappyBird

[appveyor] Add Zilmar-spec

Correct geometry mode update for Turbo3D.

Fixed glitches in Dark Rift, #2033

Support FRONT_AND_BACK culling mode.

Fixed Super Smash Brother Gfx issue on Dreamland stage #487

Simplify Calc_invw() for ZSort ucode.