use phase=phase, not phase=1
pure fluid, no X
Revert "pure fluid, no X"

This reverts commit 7c32a69c2659e0e5a16d6709fe90cc52f5fe4b52.
this seems to be the way to go for ph media (unsure though why)
prefer only p, let Dymola choose between T and h
indentation only
BaseProperties with basePropertiesInputChoice
new function specificEntropy_ph_state
example usage of basePropertiesInputChoice
removing function alias, can use functions directly
just sorting
new function specificEnthalpy_pt_state and corresponding derivative
testing of derivative specificEnthalpy_pT_state: no numerical jacobians
more testing
new functions pressure_dt_state and specificEnthalpy_dT_state and corresponding derivatives
comment Thermodynamic state,

make function header look similar for better readability
renaming basePropertiesInputChoice to componentInputChoice
testing & cleanup of testing
ThermoStates are not used, but they are declared constant in PArtialMedium and need to be defined...