Merge branch 'master' of https://github.com/Parallel-in-Time/pySDC

.github/workflows/ci_pipeline.yml

README.md

docs/contrib/02_continuous_integration.md

docs/source/index.rst

docs/source/projects/compression.rst

etc/environment-mpi4py.yml

pySDC/core/ConvergenceController.py

pySDC/core/Problem.py

pySDC/core/Sweeper.py

pySDC/implementations/controller_classes/controller_MPI.py

...C/implementations/controller_classes/controller_nonMPI.py

...ns/convergence_controller_classes/adaptive_collocation.py

...lementations/convergence_controller_classes/adaptivity.py

...ations/convergence_controller_classes/basic_restarting.py

...tions/convergence_controller_classes/check_convergence.py

...ergence_controller_classes/estimate_contraction_factor.py

...convergence_controller_classes/estimate_embedded_error.py

...rgence_controller_classes/estimate_extrapolation_error.py

.../implementations/convergence_controller_classes/hotrod.py

...ementations/convergence_controller_classes/inexactness.py