Add python3.9 to tox and workflow (#134)

* Add python3.9 to tox and workflow

* Update README [no ci]

Author: ronnie-llamado

.github/workflows/main.yml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.6, 3.7, 3.8]
+        python-version: [3.6, 3.7, 3.8, 3.9]
     env:
       OS: ubuntu-latest
       PYTHON: "3.8"

README.md

@@ -5,6 +5,7 @@
 [![Python 3.6](https://img.shields.io/badge/python-3.6-blue.svg)](https://www.python.org/downloads/release/python-360/)
 [![Python 3.7](https://img.shields.io/badge/python-3.7-blue.svg)](https://www.python.org/downloads/release/python-370/)
 [![Python 3.8](https://img.shields.io/badge/python-3.8-blue.svg)](https://www.python.org/downloads/release/python-380/)
+[![Python 3.9](https://img.shields.io/badge/python-3.9-blue.svg)](https://www.python.org/downloads/release/python-390/)
 [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/ambv/black)
 
 # testbook

tox.ini

@@ -1,12 +1,13 @@
 [tox]
 skipsdist = true
-envlist = py{36,37,38}, flake8, dist, manifest, docs
+envlist = py{36,37,38,39}, flake8, dist, manifest, docs
 
 [gh-actions]
 python =
     3.6: py36
     3.7: py37
     3.8: py38, flake8, dist, manifest
+    3.9: py39
 
 # Linters
 [testenv:flake8]
@@ -57,6 +58,7 @@ basepython =
     py36: python3.6
     py37: python3.7
     py38: python3.8
+    py39: python3.9
     flake8: python3.8
     manifest: python3.8
     dist: python3.8