Add isort GH action

.github/workflows/linting.yml

@@ -17,4 +17,20 @@ jobs:
         pip install pylint
     - name: Run pylint
       run: |
-        pylint algorithmic_efficiency
+        pylint algorithmic_efficiency
+
+  isort:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python 3.7
+      uses: actions/setup-python@v2
+      with:
+        python-version: 3.7
+    - name: Install isort
+      run: |
+        python -m pip install --upgrade pip
+        pip install isort
+    - name: Run isort
+      run: |
+        isort . --check

setup.py

@@ -1,5 +1,5 @@
-# -*- coding: utf-8 -*-
 """Setup file for algorithmic_efficiency, use setup.cfg for configuration."""
+
 from setuptools import setup
 
 if __name__ == "__main__":