Include tests on continuous likelihood and gradients in ci
Include tests on continuous likelihood and gradients in ci

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