Merge branch 'RemoveOpenCL' into 'master'

CHANGELOG.md

README.md

doc/notebooks/02_tutorial_basic_kernels.ipynb

pystencils/backends/cbackend.py

pystencils/backends/opencl1.1_known_functions.txt

pystencils/backends/opencl_backend.py

pystencils/datahandling/__init__.py

pystencils/datahandling/datahandling_interface.py

pystencils/datahandling/pyopencl.py

pystencils/datahandling/serial_datahandling.py

pystencils/display_utils.py

pystencils/enums.py

pystencils/gpucuda/periodicity.py

pystencils/gpucuda/texture_utils.py

pystencils/kernelcreation.py

pystencils/opencl/__init__.py

pystencils/opencl/autoinit.py

pystencils/opencl/opencljit.py

pystencils/rng.py

pystencils_tests/test_create_kernel_config.py