Copy paste mistake in target maker

[theovincent]

It seems like there is a mistake in the target maker.

DirectFuturePrediction/DFP/future_target_maker.py

Line 69 in b475776

targets[ns, :len(self.meas_to_predict), :] = ((meas[curr_future_steps][:, self.meas_to_predict] - meas[None,sample][:, self.meas_to_predict])/meas_std[:, self.meas_to_predict]).transpose()

I guess we should substract the mean of the measurements in stead of the value of the measurement in itself.

targets[ns, :len(self.meas_to_predict), :] = ((meas[curr_future_steps][:, self.meas_to_predict] - meas_mean[:, self.meas_to_predict])/meas_std[:, self.meas_to_predict]).transpose() 

@dosovits If what I am saying is true, I would be happy to do a pull request.