1) Fixed a bug that would throw a console error if an invalid enchantment level was found on an item that could not be legally re-applied to the item.
2) Added an option to exclude a nether world from the nether height check. This should only ever be used if you have a nether world with a non standard ceiling height. For example a bSkyBlock nether world. ONLY nether worlds will matter on this list, if you use a normal or end world in this list it will be ignored by the height check anyway.