Create a new Cyclus typesystem: mapstringmapstringdouble

[gwenchee]

Create a new Cyclus typesystem: mapstringmapstringdouble so that the input {commod:{proto:capacity}} can be done.

[gwenchee]

This actually needs to be a mapstringlistmapstringdouble

commod = {'power': [{'reactor1': 1000}, {'reactor2': 500}],
              'fuel': [{'source1': 1000}, {'source2': 800}]
            }

[FlanFlanagan]

commod = {'power': {'reactor1': 1000, 'reactor2': 500},
              'fuel': {'source1': 1000, 'source2': 800}
            }

Should be just fine? Why do you need the list?

[gwenchee]

Upon further reflection, you are right. A list isn't needed since will already be a list?

[gwenchee]

We can use mapstringmapstringint instead.