Install from requirements.

Author: arokem

.github/workflows/test.yml

@@ -21,7 +21,9 @@ jobs:
     - name: Install
       run: |
         python -m pip install --upgrade pip
-        pip install .
+        python -m pip install -r requirements.txt
+        python -m pip install -r requirements-dev.txt
+        python -m pip install .
     - name: Lint
       run: |
         flake8 --ignore N802,N806,W503 --select W504 `find . -name \*.py | grep -v setup.py | grep -v version.py | grep -v __init__.py | grep -v /docs/`