You're in Grave Danger

Fixed an error where the grave deleted all your items you had before you retrieved your items, and did not delete the grave.

Added a command /retrieve_grave <user> to retrieve lost items. Using the command without the user argument, your items will be restored. If you use the argument, the selected players items will be restored. You can not retrieve someone elses grave.

The grave is now water loggable and will by default be water logged if you die in water.