While I'm guessing I'll be in a minority here, I've used another plugin called "skills" which on my server has essentially allowed me to set up the purchasing of permissions. Users would spend in-game money to obtain certain abilities, one of them being spawning a mini, another being reduced cooldown of the mini, the last being unlimited fuel for the mini.
While your plugin right now does allow me to do all of those things, anyone who has previously purchased those skills no longer have those permission anymore. What this has forced me to do is go through every person's skills and MANUALLY apply the new permissions you have set with this update.
Love that there is some updates to this plugin, but please please PLEASE be more considerate when changing permissions this drastically in the future as this has caused a lot of headaches for my self and other admins that I also help set up these permissions for.
Just wanted to give my 2 cents here as this update has really pushed me away from wanting to use this plugin anymore and more towards something else that potentially wouldn't change their permissions so drastically.
Also while the answer for any server that had VIP packages with reduced cool downs for minis would be that the "group" would receive a new permission, the plugin "skills" isn't like that as it applys a permission ONLY when that skill is purchased and not again in the future.
Please be more considerate in the future if you are to change permissions like this though :)