Split QMMolecule.loadThermoDataFile() into separate method.
Split QMMolecule.loadThermoDataFile() into separate method.

You should be able to use this to load a data file without already
having the molecule in memory, just from the filename.
(loadThermoData method needs the molecule structure in order to figure 
out the filename and check it is a valid match).

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