add BEAGLE 3 interface, so beast master does not error with BEAGLE 3 commands
add BEAGLE 3 interface, so beast master does not error with BEAGLE 3 commands

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