Save GADDAG in compressed form.

This should add speed to some operations. However it doesn't fully work right now. For example build BADGED finds every word but BADGED. Something is off somewhere.
Some more debugging and options.

The error is not in the minimizer, but in either the serializer or the anagram function.
Anagrammer works with new compressed form gaddag.
don't print out entire answer set.
couple of comments.
efficiize anagrammer a little bit