Fixed 
 issue and added train_z.
Implemented PL.
added in priority queue stuff...not done
have error: train_huff(7352) malloc: *** error for object 0x7f91d1452b30: pointer being freed was not allocated
basic huffman tree, now time to add in Q nodes
added leaf size
added internal nodes
Added factored output LBL training.
Fixed bias gradient bug.
Blah
okay?