Fixed issue where drowned dungeons didn't spawn, and instead, a normal dungeon would spawn in the sea
Small tree leaves now decay. Due to some vanilla constraints, it's complicated to add this behaviour for large trees. I may look into this further in future
Ice spikes now don't have ice
Snowy wastelands have blue ice instead of ice
Fixed issue that allowed farmhouses to spawn inside oceans
Fixed issue where rooms from strongholds spawned things outside their rooms