Enhancement/revise tests

• Revised tests.
• Added 'parameterized' as test requirement.
• Replaced deprecated numpy data types with builtin types.
• Fixed dead link in the docs.

.gitlab-ci.yml

@@ -14,8 +14,9 @@ test_geoarray:
     - source /root/miniconda3/bin/activate ci_env
 
     # update py_tools_ds
-    - pip install -U py_tools_ds  # FIXME Remove as soon as docker container is rebuilt
-    - conda install -c conda-forge cartopy  # FIXME Remove as soon as docker container is rebuilt
+    - pip install -U py_tools_ds -q
+
+    - pip install parameterized -q  # TODO remove as soon as CI runner is rebuilt
 
     # run tests
     - make nosetests