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ROADMAP (SHORT-TERM)
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- Library functions for handling nodecore interactions.
	- API-ify pummel-splitting recipes.
	- Hint system.
	- Wallmounted pop-off-as-item and item_entity overrides
	  to transform into falling node.
- Plant life stuff
	- Better tree growth, i.e. track cumulative time, apply
	  environmental factors.
	- Leaves settle into grass as podzol?  Composting/decay?
- Wood tech.
	- Pick can break stone into cobble, then loose cobble.
	- Shovel can dig solid dirt as-is.
- Stone tech.
	- Dig up ore using pick.
		- Tin, copper, iron.
	- Combine loose cobble onto staffs to form stone tools
		- Level 3
		- Stone tools dig faster than wood, but are more brittle
- Fire tech.
	- Smelting/cooking.
		- Create and try to contain a fire, place node above fire to cook.
		- Logs can be cooked (if smothered to prevent igniting) into charcoal (loose, falling).
		- Ores can be cooked, converting into slag and molten metal.
		- Different ores require different heat intensity.
			- Tin and copper easily accessible, may only require wood.
			- Iron requires an investment in charcoal.
	- Molten metal:
		- Flowing liquid, burns, ignition source.
		- Automatically quenched after some time.
		- If flows next to water, quench immediately at that location.
			- Ingot will replace water; be sure to use infinite spring.
		- Quenching:
			- Trace out network, find all sources.
				- Apply alloying recipes.
			- Remove source nodes.
			- Determine endpoint (in water, or random bottom node)
			- Invisible "waiting" entity waits until all molten nodes gone.
				- Places ingot at destination.
		- Ingots placed near molten metals will sometimes melt (for alloying).
		- Ingots can be re-melted above sufficiently-hot fire.
	- Metal tools from ingots:
		- Copper and tin, level 4
		- Bronze, level 5
		- Iron, level 6


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