Minimizing KL (not maximizing)

[sherjilozair]

Thanks for uploading this. However, there is an error.

In the loss computation, you have elbo = data_dim * bce(x, x_hat) - KL.

It should be elbo = data_dim * bce(x, x_hat) + KL instead.

[adammenges]

just noticed this too, can submit a pr if wanted