At the specie level:
    hs = sensible enthalpy
    ha = absolute (what was total) enthalpy
    es = sensibly internal energy
    ea = absolute (what was total) internal energy

At top-level
    Rename total enthalpy h -> ha
    Rename sensible enthalpy hs -> h

Combined h, hs, e and es thermo packages into a single structure.

Thermo packages now provide "he" function which may return either enthalpy or
internal energy, sensible or absolute according to the run-time selected form

alphaEff now returns the effective diffusivity for the particular energy which
the thermodynamics package is selected to solve for.

changes from K to kappa in solid Thermo

changes from K to kappa in solid Thermo

changes from K to kappa

updating tutorials

for enthalpy and internal energy respectively

Change the implementation of alphah and alphae to use the local heat capacity
rather than attempting to compensate for the variation in an ad hoc manner.  For
correctness a heat capacity gradient term should be added to the energy
equations.