Added
- Added an option to fill all empty slots in the shop with a given material.
- Added a "DoNothing" option to shop items for when you want an item that does nothing when clicked on (useful for just providing information). Example:
Changed
- Made several big performance improvements in the code handling the actions (the event listeners). This should be especially noticeable on bigger servers.

Fixed
- Fixed placeholders not being parsed in shop item display names and lores.
- Fixed an issue where crafting would always award 1 point instead of the configured amount.
- Fixed an error that occurred when the player is killed while leaving (for example, by a combat log plugin)
- Fixed an error that could occur when the plugin saves player data and the player went offline.