Changes over r5.8_dev4:
Changes for both Voxy and Distant Horizons support;
Water caustics and colored shadows now fade away towards the edge of real chunks
World Outline effect now fades away towards the edge of real chunks
Fixed very low performance in the Nether when Border Fog is disabled or when Nether View Limit is set to Limitless
Changes to Voxy mod support:
Tweaked border fog distance to better match the recently updated Voxy render distance
Reincreased ambient occlusion in Voxy chunks to better match regular terrain
Changes to World-Space Reflections, all thanks to @FoZy STYLE
Improved performance of world-space reflections, resulting in up to 5% fps increase depending on the situation
Improved ambient occlusion inside world-space reflections
Added improved World Outline calculation that is only enabled when PBR reflections are on. All thanks to @plazmal
Added "Distance Scaled World Outline" option which makes the size of World Outline scale properly with the world
Added foliage shading for the upcoming Golden Dandelion item
Fixed a flickering reflection issue that happened when World Space Reflections, Cloud Shadows, and Double Reimagined Clouds settings are enabled at the same time
Fixed an issue that resulted in reflections disappearing behind glass when observed at steep angles and from far away