Added 5 new commands:

• "/fly":
  Usage: /fly <player>
  Enables flying for yourself or a specific player (if you have OP).

• "/nightvision":
  Usage: /nightvision OR /nv
  Grant night vision to yourself.

• "/stack":
  Usage: /stack <item>
  Stacks the same item from your inventory to your main hand.

• "/hat":
  Usage: /hat
  Swaps an item in your main hand with your helmet slot.

• "/trash":
  Usage: /trash
  Opens a double-chest GUI accessible to all players. When you put items in it, all players can see and take them, kinda like a double ender chest, but it works for anyone. After about 1.5 minutes, all the items in the trash bin will be cleared. (This is my most complex command in this plugin.)

New Features:

• Added Tab-completion to all commands that have sub-commands.

Bugfixes:

• Fixed teleport commands to only cancel when you move outside of your current coordinates, not when you move your mouse, which is a bug in old versions.