Merge branch 'feature/umbridge' into 'test/refactor'

examples/umbridge_tsunamitutorial/test_umbridge.py

examples/umbridge_tsunamitutorial/tsunami_model.py

examples/umbridge_tsunamitutorial/tsunami_model1.py

src/bayesvalidrox/bayes_inference/bayes_inference.py

src/bayesvalidrox/bayes_inference/bayes_model_comparison.py

src/bayesvalidrox/bayes_inference/mcmc.py

src/bayesvalidrox/post_processing/post_processing.py

src/bayesvalidrox/pylink/pylink.py

src/bayesvalidrox/surrogate_models/bayes_linear.py

src/bayesvalidrox/surrogate_models/engine.py

src/bayesvalidrox/surrogate_models/reg_fast_ard.py

src/bayesvalidrox/surrogate_models/reg_fast_laplace.py

src/bayesvalidrox/surrogate_models/surrogate_models.py