Merge of pyicon_m300977 with master.

README.md

config_ckdtree/convert_npz_to_nc.py

doc/doc_dwd/html/index.html

notebooks/examp_easyms2022.ipynb

notebooks/examp_intro_start_xr.ipynb

notebooks/pyicon_view_Apollo.ipynb

pyicon/__init__.py

pyicon/pyicon_calc_xr.py

pyicon/pyicon_plotting.py

pyicon/pyicon_simulation.py

pyicon/pyicon_tb.py

pyicon/quickplots/old_qp_compare_atm_dwd.py

pyicon/quickplots/old_qp_driver.py

pyicon/quickplots/pyicon_quickplots.py

pyicon/quickplots/qp_compare.py

pyicon/quickplots/qp_compare_atm_dwd.py

pyicon/quickplots/qp_driver.py

pyicon/tests/__init__.py

pyicon/tests/conftest.py

pyicon/tests/test_data/.place_holder