Only index the reactive species, not the inerts.
Only index the reactive species, not the inerts.

We might run into some trouble in terms of nonreactive / nonbath gas species
like in liquid phase with water.  But probably they won't want that species
to be indexed anyway.

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