Relative Locations, Structures.

And the woes of unchecked compilation errors. Relatives are basically vectors, with a bit of a twist. With the structure classes the Multi-Block Structures don't need to store the slave list in NBT-data. Now it can just be part of the base definition and the slave list can be calculated from that. More cycles, less memory.
Sync Commit
Finally back at working on TileEntities.