Shrimple

This update contains a ton of minor fixes/adjustments not listed.

• Improved overall lighting, fog, VL.
• Added bounced floodfill lighting for sunlight only.
• Added cloud shadows (thanks to Fayer3).
• Added screen-space reflections [WIP].
• Added distance-blur/DOF.
• Added initial support for Supplementaries mod.
• Added initial support for Distant Horizons mod.
• Added water blur.
• Added more RT shapes for Create mod.
• Added hard-coded-metal support for LabPBR materials.
• Added more tonemap options.
• Added world-time animation option (for fixed-time recording mods).
• Added initial water caustics (needs work).
• Added option for adjusting exposure offset.
• Added water TIR (off by default).
• Added support for rendering multiple water volumes (off by default, broken with latest AMD drivers).
• Added screen-space ambient occlusion.
• Added fog-shape option.
• Added option to enable/disable light-leak fix.
• Improved blending of stained glass.
• Improved glass tinting.
• Improved warer waves.
• Improved bloom.
• Improved SSS [WIP].
• Improved smooth-POM performance.
• Fixed LabPBR normals being decoded improperly.
• Made metals less dark.
• Softer POM shadows.
• Document mod support.