6 commits

Author	SHA1	Message	Date
Correl Roush	68b3749ff3	Remove "returns" dependency	2022-01-22 00:23:09 -05:00
Correl Roush	c8b6563d17	Separate material and trade logic	2022-01-22 00:21:09 -05:00
Correl Roush	4e2a1691a3	Create a material database	2022-01-21 23:37:58 -05:00
Correl Roush	f60d73d761	Add type checking	2022-01-20 12:09:49 -05:00
Correl Roush	eb2f2ef13c	Handle invalid material conversions	2022-01-20 11:57:53 -05:00
Correl Roush	acfb0ab8f5	Add tests	2022-01-20 11:04:54 -05:00