Add new tutorial on Coupled Climate Networks

[codecov[bot]]

Codecov Report

Attention: 257 lines in your changes are missing coverage. Please review.

Comparison is base (6dc3f4c) 48.00% compared to head (3be71b7) 51.07%. Report is 229 commits behind head on master.

Files	Patch %	Lines
src/pyunicorn/core/spatial_network.py	66.01%	52 Missing :warning:
src/pyunicorn/eventseries/event_series.py	85.46%	50 Missing :warning:
src/pyunicorn/climate/cartopy_plots.py	17.30%	43 Missing :warning:
src/pyunicorn/core/network.py	51.80%	40 Missing :warning:
src/pyunicorn/core/geo_network.py	44.00%	14 Missing :warning:
...rc/pyunicorn/climate/eventseries_climatenetwork.py	75.00%	10 Missing :warning:
src/pyunicorn/core/grid.py	88.37%	10 Missing :warning:
src/pyunicorn/core/data.py	20.00%	8 Missing :warning:
src/pyunicorn/core/netcdf_dictionary.py	27.27%	8 Missing :warning:
src/pyunicorn/climate/coupled_climate_network.py	36.36%	7 Missing :warning:
... and 7 more

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #190 +/- ## ========================================== + Coverage 48.00% 51.07% +3.07% ========================================== Files 44 45 +1 Lines 6877 7066 +189 ========================================== + Hits 3301 3609 +308 + Misses 3576 3457 -119 ```

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