ItemFlip v4.5.0

Fixed java.lang.IncompatibleClassChangeError: Found class org.bukkit.inventory.InventoryView, but interface was expected

1.21.1 support

Code optimalizations

Small fixes

Fixed a issue with InvitationExpire thing.

Added new option to enable/disable InvitationExpire

Added ability to change lore in /if history menu:

YAML:

History:
  LoreWin:
    - ""
    - "&c%LOSER%"
    - "&a%WINNER%"
    - ""
    - "&a&lWON"
  LoreLost:
    - ""
    - "&c%LOSER%"
    - "&a%WINNER%"
    - ""
    - "&c&lLOST"

Fix:

When players leave a server(or gets kicked etc), game will stops and all items will be returned to owners

Fixed items flickering in menu

• Added a timeout, when you send a request to someone, they have eg: 30 seconds to accept or cancel, or it automatically cancels. - configurable in config
• Added an itemflip history, you can see on the entire server who recently won, lost what they won and what they lost.
• Added a chat announcement to announce when someone wins or loses an itemflip (to the entire server)
• Added two new subcommands:
  - /itemflip toggle broadcast - To toggle broadcast messages
  - /itemflip history [playerName] - To open self/other player history GUI
  
• Added three new perms
  - itemflip.history - For use history command - default: player
  - itemflip.history_other - For use history command on other player - default: player
  - itemflip.toggle - For use toggle subcommand - default: player
• Added ability to change board items to AIR instead of BARRIER

Fixed another concurrentmodificationexception

• Hopefully fixed ConcurrentModificationException
• Added two new settings

YAML:

Settings:
  # If true gui will show up for both players, otherwise only for who clicked
  OpenGuiForBoth: true

  # If true gui will open again if player closes GUI
  OpenGuiOnClose: true