Error when using per-world Vault Economy methods

[Phoenix616]

Currently there is a NotImplementedException thrown when trying to use the per-world Vault Economy methods, this does not match VaultAPI specs (which says to use the global balance instead) and therefore breaks any plugin which uses those methods to provide per-world economy support in case the economy plugin supports it. (e.g. ChestShop-authors/ChestShop-3#605)

[ericgrandt]

Fixed in 0.13.2, thanks for the report @Phoenix616.