Matthias Seeger created MXNET-39:

             Summary: Mathematical function unary ops related to CDF of normal 
                 Key: MXNET-39
             Project: Apache MXNet
          Issue Type: Improvement
            Reporter: Matthias Seeger
            Assignee: Chris Olivier

PR is doing two things:
 * New math function unary ops
 * Improve unit tests for unary and binary basic ops

New ops implement log of CDF of standard normal (scipy.stats.norm.logcdf), and 
its derivative. Required in many Bayesian ML algorithms:
 * Bayesian optimization for hyperparameter tuning
 * Expectation propagation for binary classification

 This can go to contrib for now.

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