Merge branch 'advanced_streaming_extensions' into 'master'

.gitignore

.gitlab-ci.yml

lbmpy/advanced_streaming/__init__.py

lbmpy/advanced_streaming/communication.py

lbmpy/advanced_streaming/indexing.py

lbmpy/advanced_streaming/utility.py

lbmpy/boundaries/boundaries_in_kernel.py

lbmpy/boundaries/boundaryconditions.py

lbmpy/boundaries/boundaryhandling.py

lbmpy/creationfunctions.py

lbmpy/macroscopic_value_kernels.py

lbmpy/phasefield_allen_cahn/kernel_equations.py

lbmpy/session.py

...ests/advanced_streaming/test_advanced_streaming_noslip.py

lbmpy_tests/advanced_streaming/test_communication.py

lbmpy_tests/advanced_streaming/test_fully_periodic_flow.py

...tests/advanced_streaming/test_periodic_pipe_with_force.py

lbmpy_tests/phasefield_allen_cahn/test_codegen_3d.py

...hasefield_allen_cahn/test_phase_field_allen_cahn_2d.ipynb

lbmpy_tests/test_boundary_handling.py