• engine: Option to automatically compute bent normals from SSAO & apply to specular AO
  [⚠️ Material breakage].
• engine: New APIs: Light channels. Geometry and lights now have a channel associated to them, at
  least one channel must match for lighting to occur [⚠️ Material breakage].
• engine: Fix potential GPU crash with punctual lights near the far clipping plane.
• materials: The inverseTonemap API is now an exact inverse of the Filmic tonemapper.
• Metal: Better support for texture formats on M1 Macs.