Basically, 0.18.0 is for 0.18.0 and 0.18.1 of Factorio, 0.18.1 is for 0.18.2 of factorio and probably later versions.
Changing the older versions to be less than version 0.18.2 isn't something I can really do, but I really should have set a >= base 0.18.2 in the update.