Bug fix to check which taxa have already been added.
Bug fix to check which taxa have already been added.

adamallo/beast-mcmc,beast-dev/beast-mcmc,adamallo/beast-mcmc,adamallo/beast-mcmc,4ment/beast-mcmc,maxbiostat/beast-mcmc,maxbiostat/beast-mcmc,adamallo/beast-mcmc,4ment/beast-mcmc,maxbiostat/beast-mcmc,4ment/beast-mcmc,beast-dev/beast-mcmc,beast-dev/beast-mcmc,4ment/beast-mcmc,adamallo/beast-mcmc,beast-dev/beast-mcmc,beast-dev/beast-mcmc,4ment/beast-mcmc,beast-dev/beast-mcmc,adamallo/beast-mcmc,4ment/beast-mcmc,maxbiostat/beast-mcmc,maxbiostat/beast-mcmc,maxbiostat/beast-mcmc