fixed bug in growth translation where it wasn't correctly converting units
fixed the multiple source issue by separating the source commodity finding function, using sets instead of lists, and writing unit tests for the source commodity finding function
fixed typo bug in the compiler that broke incorrectly added exports
added functionality to correctly output reactor power
fixed bugs related to the reactor power name, cycle length, and reactor core loading. inpro input has been tweaked to accommodate the json implementation (e.g. making core loading 1.3e formatted, having incore = outcore, and various naming conventions). inpro now correctly translates. It's messy, but it works.
inpro now correctly translates, with json and xml implementations stored in input/inpro. closes #10.