Added sqlalchemy to requirements.
Add UAI networks.
Add learner_class argument to Trainer.
Add UAI networks (2).
Update logistic regression learner to return probabilities even for unobserved labels.
Add TemporalIntegrator.
Add tools for running experiments on picloud, storing results in SQL database.
Merge branch 'master' of github.com:stuhlmueller/i3

Conflicts:
	i3/learn.py
	i3/train.py
Merge branch 'master' of github.com:stuhlmueller/i3

Conflicts:
	i3/learn.py
	i3/train.py
Add jags/ and data/ to list of directories ignored by test runner.