Potential typo in variational logistic regression

[btlorch]

Hi there,
thanks a lot for sharing your implementations! In the update formula for the covariance in the variational logistic regression model, I believe that the first part of the sum I / self.alpha should be the inverse of the prior covariance, i.e., I * self.alpha, as in Equations 10.158 and 10.176.
Hope this helps!