New Monster, Render Changes, Critical Item Mods

More minor stuff!

Monsters

• Added Forest Sprout, Jungle Sprout, and Enraged Sprout to the Forest monster pool

Items

• Added "Critical Hit Chance %" to Gloves and Weapons
• Added "Critical Hit Multiplier %" to Gloves and Accessories

Rendering

• Re-wrote the layering system to be more flexible later. If you see any bugs, let me know!
• Added support for Y-index sorting for packs of monsters. Essentially, monsters will render higher in the stack if they're closer to you, instead of randomly index-fighting like they used to. This makes large packs of monsters look a lot cleaner