Add multiplicity label to saveEntry() for thermo libraries.
Add multiplicity label to saveEntry() for thermo libraries.

And set printMultiplicity in toAdjacencyList() to False to not print
multiplicity as part of the adjacency list

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