Install via setup.py

Author: bytebat

.github/workflows/ci.yml

@@ -25,7 +25,8 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         python -m pip install flake8 pytest
-        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+        # if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+        pip install .
     - name: Lint with flake8
       run: |
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=120 --statistics