Update CI workflow

Author: codingjoe

.github/workflows/tests.yml renamed to .github/workflows/ci.yml

@@ -1,21 +1,37 @@
-name: Tests
+name: CI
 
-on: [push]
+on:
+  push:
+    branches:
+      - master
+  pull_request:
 
 jobs:
-  build:
 
+  dist:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/setup-python@v2
+      - run: python -m pip install --upgrade pip setuptools wheel twine readme-renderer
+      - uses: actions/checkout@v2
+      - run: python setup.py sdist bdist_wheel
+      - run: python -m twine check dist/*
+
+  pytest:
     runs-on: ubuntu-latest
     strategy:
-      max-parallel: 4
       matrix:
-        python-version: [3.6, 3.7]
-        django-version: [1.11.*, 2.2.*]
-
+        python-version:
+          - 3.6
+          - 3.7
+          - 3.8
+        django-version:
+          - 2.2.*
+          - 3.1.*
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v1
+      uses: actions/setup-python@v2
       with:
         python-version: ${{ matrix.python-version }}
 
@@ -26,7 +42,7 @@ jobs:
     - name: Install Selenium
       run: |
         mkdir bin
-        curl -O https://chromedriver.storage.googleapis.com/77.0.3865.40/chromedriver_linux64.zip
+        curl -O "https://chromedriver.storage.googleapis.com/$(curl https://chromedriver.storage.googleapis.com/LATEST_RELEASE)/chromedriver_linux64.zip"
         unzip chromedriver_linux64.zip -d bin
     - name: Install dependencies
       run: |