Better handling of units in Chemkin files by readKineticsEntry().
Better handling of units in Chemkin files by readKineticsEntry().

The most important change is that reaction kinetics are now created such
that they maintain the units used in the Chemkin file, rather than
converting everything to cm^3/mol/s and kcal/mol.

The increased flexibility is needed in order to be able to also load
RMG-Java kinetics libraries.

enochd/RMG-Py,chatelak/RMG-Py,comocheng/RMG-Py,chatelak/RMG-Py,nyee/RMG-Py,nickvandewiele/RMG-Py,KEHANG/RMG-Py,faribas/RMG-Py,nickvandewiele/RMG-Py,pierrelb/RMG-Py,enochd/RMG-Py,KEHANG/RMG-Py,faribas/RMG-Py,comocheng/RMG-Py,pierrelb/RMG-Py,nyee/RMG-Py