fixed the clone() method in DBNs AdagradLearningRate
clone() fixed in BNNV
added a backPropStep() method to DBNs BMLNNV
lotsa work on the update() method in BMLNNV
added a newer clone method in DBN
first major rebuild of DBNs BMLNNV backprop(), needs more testing
added method to check for should backprop in BMLNNV