Merge pull request #17 from cider-team-mercury/energetics

added 'wishlist' quantaties to model_suite
Added a list of quantities required for entropy calculations
Adding the Fractionation of Heat producint elements
Added Internal heating Class
Try Example With Fixed Crust`
Assorted incorrect work
Added results for 'wishlist' parameters (all but conductivity) for two models with with different size cores informed by dumberry. Also changed liquidus() in corePlanet to be a Univariatespline.