Merge branch 'master' into hyteg

.flake8

.gitignore

.gitlab-ci.yml

.isort.cfg

AUTHORS.txt

MANIFEST.in

README.md

binder/apt.txt

binder/environment.yml

binder/start

conftest.py

doc/conf.py

doc/img/github_repo_card.png

doc/img/logo_large.svg

doc/notebooks/01_tutorial_getting_started.ipynb

doc/notebooks/03_tutorial_datahandling.ipynb

doc/notebooks/04_tutorial_advection_diffusion.ipynb

...books/05_tutorial_phasefield_spinodal_decomposition.ipynb

doc/notebooks/06_tutorial_phasefield_dentritic_growth.ipynb

doc/notebooks/demo_benchmark.ipynb