Complementary Shaders r5.1 Development Version 5 (Patreon)

Changes over r5.1_dev4:

- Increased humidity bloom by 40% in caves

- IntegratedPBR Changes:

  * Added copper material properties to the 1.21 copper blocks

  * Added fancy emission to the 1.21 copper bulbs

  * Reworked Sculk block/vein emission to vary by time

  * Tweaked Glow Lichen emission to look less noisy in the distance

  * Tweaked blocklight on Deepslate to make caves look nicer

- Fixed light leaking issue on foliage that are close to cave walls

- Fixed Texture Filtering causing glitches with the Model Gap Fix mod

- Fixed enabling Distance Blur while Bloom is disabled causing an error