Merged BetaDataManager into DataManager. Switched CopyMap project to use AnvilSubstrate.
Removed BetaRegion, BetaRegionManager, and BetaWorld classes.
Removed the AlphaWorld class.
Merged the NbtWorld class into AnvilWorld.
Added *.userprefs to .gitignore.
Removed unused constructor.
Converted Dimension to an enum. Changed a bunch of parameters from int to Dimension.
Changed BlockType to an enum.
Removed the AlphaChunkManager class.
Extracted AlphaBlockManager and AnvilBlockManager classes to their own files.
Split a bunch of interfaces out into separate files.
Split out more interfaces.
Renamed some files.