There is no longer the: additional-damage, and reduced-damage options in the armor.yml for each set. This has been replaced by a list of modifiers that can be added to each set, example:
There is now an option in the config.yml called: permission-based-wear. If this is set to true then the player will need to have the permission node: carmor.wear.<armor set number> in order to wear the full set of armor and get the effectsCode (Text):
# See the spigot page for all modifiers & syntax
I also fixed up the default armor.yml so that it is a bit more desciptive.