Install the package before running tests

Author: russell

.github/workflows/ci.yaml

@@ -21,6 +21,7 @@ jobs:
         python -m pip install --upgrade pip
         pip install flake8 pytest
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+        pip install -e .
     - name: Lint with flake8
       run: |
         # stop the build if there are Python syntax errors or undefined names

.gitignore

@@ -4,3 +4,4 @@
 parser.out
 parsetab.py
 *.pyc
+/sifter.egg-info/