Improve high accuracy player LOS checks
Fix weather detection
Use percentage diffuse multiplier
Advance auxiliary SSL checks to the shadow caster queuing stage
Fix Trifle FP shadows compatibility with advanced aux checks
Fix the occasional disappearance of the player shadow
Add OBSE 21 dependency
Add expanded maximum shadow count settings
Fix bug that caused redundant caster queue stage checks for higher priority casters
Improve advanced aux check support (still a hack though)
Misc changes