Fix a bug with the scaleAllIndependently option. The Hastings ratio was not computed properly. I can't figure out how bad it was...  Please note that I rely on the existing formulla and I am not sure if this one is correct !
Fix a bug with the scaleAllIndependently option. The Hastings ratio was not computed properly. I can't figure out how bad it was...  Please note that I rely on the existing formulla and I am not sure if this one is correct !

benb/beast-mcmc,benb/beast-mcmc,benb/beast-mcmc,benb/beast-mcmc,benb/beast-mcmc