Get nltk data

Author: ZoranPandovski

.github/workflows/python-package.yml

@@ -31,6 +31,10 @@ jobs:
     - name: Lint with flake8
       run: |
         python -m flake8 .
+    - name: Install NLTK data
+      run: |
+        python -m nltk.downloader punkt
+        python -m nltk.downloader punkt_tab
     - name: Test with unittest
       run: |
         # Run all the "standard" tests