A light engine optimization mod which also introduces threaded lighting.
Threading can be toggled on and off, when its toggled off the light engine optimizations still remain but all light calculations are done on the main thread, when it is toggled on the lighting is done in a dedicated per-dimension lighting thread which then notifies the main thread about chunks which need to be updated.
Warning: While the threaded lighting has been tested in multiple large modpacks, there might still be issues due to the Beta codebase just not being designed with threaded lighting in mind, when reporting an issue please make sure to also say if the issue happens with threading turned off (This can be done in the mod's config).
