Added a new class for when Multiblocks fail assembling
Added a logger global variable
Renamed ItemUtils to ItemstackNBTUtils, and moved the methods for dropping itemstacks as entities to Utils
Merged ItemstackNBTUtils into Util
Merged KeyboardUtils into Util
Made GloVars non-instantiable
Added IAssemblyFailure for failures
Added a setter for tileMaster on IMBTileComponent