I changed the name filter for schematic names from CommandEndDungeonCreation to DungeonHelper, and renamed it to NamePattern. I also rewrote most of registerCustomDungeon() to be much more concise. The changes are incomplete but I'm making an intermediate commit. The aim is to change DungeonHelper into a proper singleton and to eliminate the clunky sections that manually map dungeon categories to their corresponding lists. Instead, I'll use data structures to implement that far more efficiently.
DimDoors
Dimensional Doors for Minecraft Adds several items that allow the player to move between and create dimensions
see the MC forum topic for details