new input structure

[gwenchee]

Since this #33 is proving difficult to resolve, a new typesystem is suggested:
DDCA.pdf

[FlanFlanagan]

So, I think it's a good start, but we run into an issue with facilities with multiple commodities. Although, I guess we could avoid that by putting a facilities down multiple times.

[gwenchee]

We decided in this #141 what we will do in the case of multiple commodities

[FlanFlanagan]

I think you misunderstand my question. I'm referring to a facility with two fixed outputs. For example, enrichment has both a tails commodity, and a enriched fuel commodity. Both need to be tracked.

[gwenchee]

Ah i see. This was an issue even with the previous type system though?

[FlanFlanagan]

I don't think so, because it was based on commodity. But I think the solution was the same as what I just suggested. So, I don't see any issue with this.

[gwenchee]

updated here: #212