Adds workaround to CI for windows and py3.7

.github/workflows/pythonpackage.yml

@@ -27,14 +27,15 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install -r requirements.txt
-    - name: Lint with flake8
+    - name: Workaround for windows and python 3.7
+      if: matrix.os == 'windows-latest' && matrix.python-version == 3.7
+      run: |
+        pip install netCDF4<=1.5.8 
+        # There is no binary package of netCF4>=1.6.0 for windows and python 3.7
+        # the largest supported version is 1.5.8
+    - name: Install dependencies
       run: |
-        # pip install flake8
-        # stop the build if there are Python syntax errors or undefined names
-        # flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
-        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
-        # flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+        pip install -r requirements.txt
     - name: Build package
       run: |
         python -m pip install -e .