Question about modifying beta parameter to support vector input

Hi,

First of all, thanks for your work on MALLET!

Quick question — is there existing support for using an asymmetric beta prior as a vector of length `numTypes` (i.e., word-specific priors across the vocabulary) in MALLET's LDA implementation?

I'm currently working on adding this functionality, but wanted to check first in case it's already implemented.

Thanks,
Tal.