removed print statements, added more tests

Status Name Job ID Coverage
  Static Checks
canceled check_no_asserts #1368661

 
  Build Docker
canceled build_docker_from_cache #1368662

 
  Test
canceled test_mpi #1368664

canceled test_serial #1368663

 
  Demo Runs
canceled run_bernoulli #1368672

canceled run_curve_fitting #1368673

canceled run_getting_density #1368671

canceled run_getting_started_1 #1368667

canceled run_getting_started_2 #1368668

canceled run_getting_started_3 #1368669

canceled run_getting_started_mf #1368670

canceled run_ipynb0 #1368665

canceled run_ipynb1 #1368666

canceled run_meanfield #1368675

canceled run_nonlinearity_guide #1368676

canceled run_visual_vi #1368674