Delegated a lot of functionality to CheckPointTreeModifier and extended the function of the update choice objects.
Delegated a lot of functionality to CheckPointTreeModifier and extended the function of the update choice objects.

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