Merge branch 'felix_issue066_update_requirements' into 'develop'

update requirements to get cartopy running

See merge request toar/machinelearningtools!56

requirements.txt

 Keras==2.2.4
-numpy==1.15.4
+numpy==1.18.1
 tensorflow==1.12.0
-xarray==0.14.0
-pandas==0.25.1
-requests==2.22.0
-pytest==5.2.1
-pytest-lazy-fixture==0.6.1
-pytest-cov
-pytest-html
-pydot
-mock
-statsmodels
-seaborn
-dask==0.20.2
-toolz  # for dask
-cloudpickle  # for dask
-cython==0.29.14
-pyshp
-six
-pyproj
-shapely
-Cartopy==0.16.0
-matplotlib
-pillow
-scipy
+xarray==0.15.0
+pandas==1.0.1
+requests==2.23.0
+pytest==5.3.5
+pytest-lazy-fixture==0.6.3
+pytest-cov==2.8.1
+pytest-html==2.0.1
+pydot==1.4.1
+mock==4.0.0
+statsmodels==0.11.0
+seaborn==0.10.0
+dask==2.11.0
+toolz==0.10.0  # for dask
+cloudpickle==1.2.2  # for dask
+cython==0.29.15
+pyshp==2.1.0
+six==1.11.0
+pyproj==2.4.2.post1
+shapely==1.7.0
+Cartopy==0.17.0
+matplotlib==3.1.3
+pillow==7.0.0
+scipy==1.4.1
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+fsspec==0.6.2
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