Improved the deletion of islands. This was causing lag. Added
NMSHandlers for different versions of the server to do super-fast
deletion.
Fixed money issue with multiworld economy and minishop.
Added new challenge alchemist that requires potions.
Potions can now be added into the challenge.yml file.
Added setting to enable money reset to be switched off when a new island
is made.
Added brew event that removes the acid bottle warning when potions are
made.
Refactored /acid code for the console.
Added update for when lava bucket is returned to user from scooping
obsidian.
Fixed bugs.