New fuels are iso/n-propanol and urea. Although urea is a bit dodgy, but that's
all of the properties Ive found so far.
I've also added a variation of temperature instead of constant temperature for
some injector-classes so Im sending you the new version of the dieselFoam
tutorial also.
Lookup liquidProperties in thermophysicalProperties (avoid conflict with
gas-phase).
Changed liquidFuelComponents to liquidComponents.
Updated dieselFoam tutorial to reflect the changes