surface.DrawTexturedRectUV stops applying sub-pixel UV adjustment
Commit 6a75b6 on main makes surface.DrawTexturedRectUV ignore the "sub pixel adjustment" of UVs so its UV arguments work as expected; only the Lua binding is affected.
- Ignore UV adjustments in
surface.DrawTexturedRectUV - Refined DImage subrect support and KeepAspect features
- Removed a leftover debug panel from the Paint tool; its icons keep aspect
- Minor cleanups