Added an option to set the format of the pack as 1.9 introduced a new one with the version 2. Players with 1.8 will get packs with version 1/no version and players that connect with 1.9 get version 2 if available. The defined pack and then the secondary list is used to resolve which pack a player gets from the top to bottom.
Added option to restrict a pack so that only players with the permission to use it will get it send. You can also set your own permission if you want.
Example on how the new config options could be integrated:
/usepack without any arguments now lists all the packs a player has access to via the /usepack command. You should add the new message config entries "packlisthead" and "nopacks" for that to not display an error on Bungee.
Experimental AuthMe Reloaded support. (If you want support for more authentication plugins contact me!) It tries to send the pack after a player logged in. You have to run World Resourcepacks on the Bukkit server and set "authme" to true in the config.yml