Say which chemkin label is dangerously long
Say which chemkin label is dangerously long

Also, reduce number of lookups of species.label
by storing label in local namespace.

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