Trunk: solve Issue 322: Tracer: stack buttons to save space
Trunk: solve Issue 322: Tracer: stack buttons to save space
danieljue/beast-mcmc,danieljue/beast-mcmc,danieljue/beast-mcmc,evolvedmicrobe/beast-mcmc,evolvedmicrobe/beast-mcmc,evolvedmicrobe/beast-mcmc,danieljue/beast-mcmc,evolvedmicrobe/beast-mcmc,danieljue/beast-mcmc,evolvedmicrobe/beast-mcmc