No Void

It's a very specific and simple mod, but it should be useful for someone

                  a simple mod that adds a new block that fills the void of the end making the end now an easy place to build your stuff

You can also make a smooth and brick version of the end rock block

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(How did I manage to fill the void as if it had a biome? well the end rock is generated as an ore that I made it spawn in "air blocks" so I just increased the amount it spawns to become a ground)