fixed order of mean field updates that made the VLB incorrect sometimes
moved vlb acting weird
Merge branch 'master' of github.com:mattjj/pybasicbayes
Merge branch 'master' of github.com:mattjj/pybasicbayes
Merge branch 'master' of github.com:mattjj/pybasicbayes
Merge branch 'master' of github.com:mattjj/pybasicbayes