Simplify CI setup

Author: codingjoe

.github/workflows/tests.yml

@@ -1,4 +1,4 @@
-name: Tests
+name: CI
 
 on:
   push:
@@ -22,7 +22,6 @@ jobs:
   pytest:
     runs-on: ubuntu-latest
     strategy:
-      max-parallel: 4
       matrix:
         python-version:
           - "3.7"
@@ -32,16 +31,15 @@ jobs:
           - "2.2"
           - "3.1"
     steps:
-    - uses: actions/checkout@v1
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v1
       with:
         python-version: ${{ matrix.python-version }}
+    - uses: actions/checkout@v1
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip setuptools codecov
         pip install django~=${{ matrix.django-version }}
     - name: Test with pytest
       run: python setup.py test
-    - name: Codecov
-      run: codecov
+    - run: codecov