This update is quite fascinating! I will be listing a few things that you will NEED to note before updating!

• You will need to keep a backup of your current voidchest folder before updating to this version! There have been changes that may cause issues such as the removall of existing voidchests in your server and the voidchest items won't be operateable from previous updates!
  • Disable the voidchest plugin that is currently running in your server.
  • After disabling the plugin, copy the voidchest folder somewhere safe so you don't lose all the work you've done.
  • Having done that, reload the plugin with either a plugin manager or by restarting your server. Make sure the plugin was reloaded properly.
  • After the new folder is loaded, properly replace anything you want and then reload the plugin using /voidchest reload or by restarting, your choice.
  • Having done that, make sure to satisfy your players by giving them the new voidchests.

Noticeable changes and updates:

• There can now be multiple voidchests. You can assign names to these voidchests, a default booster, hologram text and whatever else there is available.
• Toggleable holograms through voidchest's menu GUI have now been added. You can now set the height and text you want the specific voidchest type to have, along with placeholders that update each time a sell is made. You will be required to install holographicdisplays if you wish to use this feature of the plugin.
• Added playerboosters with an expire date. You can add individual boosters to players with a command that expire after a given interval.
• Re-organized the options.yml by adding more comments explaining what most things do.
• Finally added an auto-purge task running in the background that will basically clear any voidchest data for locations that have been modified by third party plugins or explosions.
• Added a new list command that will show you all available voidchest names.
• Made it so you can add different permissions for breaking or placing voidchests (different for each voidchest, or the same, up to you). This can be done through the voidchest-inventory.yml file.
• Changed the auto-update interval to 2 hours from 1 hour and 15 minutes.
• Fixed a potential bug with certain items not working properly due to material name changes from version 1.13 and above (material examples are carrot, potato, etc)
• Sounds will no longer default to level up if none found, they will simply not be played.
• Breaking voidchests will now drop the contents of the custom inventory and the chest's inventory.
• Fixed a bug where if you were to use /voidchest reload, the voidchest item given by the command wouldn't update so you'd be forced to either restart or reload.
• Re-organized some code so as to (hopefully) increase performance. This however means that if you have made an addon for voidchest or a plugin that uses some of voidchest's method, you will have to update it since some methods have changed.
• Added an option for each voidchest to either prevent or allow players to open the actual chest's inventory when right clicking it.
• Added a whole lot more events for developers to use in case they may want to change certain behaviour regarding voidchests.
• Changed how voidchests are saved and loaded from the file (basically changed some paths, not much). This may cause an issue if you update the plugin without following my previous instructions.