I spent a lot of time on this update to upgrade the features of this plugin.

The first thing that was added was a custom GUI. You are able to change the GUI size, move items around, and create custom items that can do actions when clicked. All of this is disabled by default, and you need to set to change modes.

Some other changes:

• Added a strikethrough option for rank completion
• Added optional completion lore for each rank
• Added a hide-nbt option
• Added 5 placeholders: %notranks_rank%,
  %notranks_rank_number%,
  %notranks_requirement_<x>%,
  %notranks_rank_progress%, and
  %notranks_rank_cost%
• Fixed a problem with rank requirements not working with an empty list
• Changed how HeadDataBase was incorporated and added an enable option

If you want more information, take a look at the updated config, and I've annotated every new option