Cleanup
Cleanup
Added head exists / does not exist feature.
http://nlp.cs.lth.se/software/treebank_converter
Do not make impossible moves but learn from them.  Record the actual
moves made.
Gave up on cost based training.  Results get worse.  Even when there
are equal cost or equal score moves, it is best to consider only the
moves actually performed.
Cleanup.
Added testing mode.
Feature symbols
log, run, mat
Added mrg to dp converter.
I have given up on cost based perceptron updates.