Specified Spawning

• Fixed custom spawn groups not getting loaded properly

• Rules are now automatically reloaded the first time a server tries to spawn mobs after loading. This should fix issues with mods like galacticraft that recalculate their mob spawns later than normal

Initial upload for Modrinth

Changelog from 0.5.0

• The Impossible Library 0.4.0+ is now required
• Spawn groups are now loaded when they are needed instead of during the coremod phase
• Added a cache for gamestage selectors that updates every 5 ticks to fix performance issues
• Gamestage selectors now properly filter out fake players