** First of all, thanks to @Ein_Jojo for coding the update

+ Custom world generators
» When creating a new world, a new icon can be found in the "World Create GUI": Generators
» In order to create a world with a custom world generator, the generator plugin must be present in the "plugins" folder (and the plugins must be loaded!)
» Then after having selected "Generators" as a world type, enter the world name and afterwards the name of the World Generator and voilà!

+ Bug fixes