Merge branch 'master' into doc/remove-init-reference

Author: Theofilos Manitaras

.github/workflows/main.yml

@@ -31,6 +31,7 @@ jobs:
       if:  matrix.python-version == '3.8'
       uses: codecov/codecov-action@v1
       with:
+        token: ${{ secrets.CODECOV_TOKEN }}
         fail_ci_if_error: true
 
   modulestest: