Changes over r5.5_dev2:
- Added a fake variable penumbra shadow method that only works with the Reimagined style of sun angle
* Allows shadows to look much sharper when they are very close to the block they are cast by
* Costs less than 1% performance, but the simplicity of the effect makes it only work on shadows of full blocks
* Will be disabled if the Shadow Quality setting is reduced to Low or below
- Tweaked the look of shadows when the Pixelated Shadows option is enabled alongside fixing some related problems
- Fixed the image going fully black in some cases right after loading in a world