This plugin has been recoded pretty much from scratch and now supports all Minecraft versions above 1.8. I haven't had time to test all versions but definitely works on 1.8 and 1.16, so please contact me if you have any problems.
An update for those of you who keep requesting for me to change the command
In this update I have added a configuration option
"command: potion" where you can specify the command used to stack potions. By default the command is set to
/potion
Previously stack sizes could only be
64, 32, 16 and 8. With this update you may give a user the permissions
potionstacker.<1-64> to support any stack size between 1 and 64. Please note that if a player has
potionstacker.57 and
potionstacker.40 the stacksize of
57 will be dominant.