GHA: Regular package installation instead of -e (#106)

To detect any missing files or import issues

Author: dweindl

.github/workflows/ci_tests.yml

@@ -40,7 +40,7 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install -r .ci_pip_reqs.txt
-        pip install -e .[reports,combine]
+        pip install .[reports,combine]
 
     - name: Run flake8
       run: |