Add initial support py3.9

Author: CamposContentful

.github/workflows/test.yml

@@ -8,15 +8,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["pypy3", "3.6", "3.7", "3.8"]
+        python-version: ["pypy3", "3.6", "3.7", "3.8", "3.9"]
         os: [ubuntu-latest, macos-latest, windows-latest]
         include:
           # Include new variables for Codecov
           - { codecov-flag: GHA_Ubuntu, os: ubuntu-latest }
           - { codecov-flag: GHA_macOS, os: macos-latest }
           - { codecov-flag: GHA_Windows, os: windows-latest }
           # Dev versions
-          - { python-version: 3.9-dev, os: ubuntu-18.04 }
           - { python-version: 3.10-dev, os: ubuntu-18.04 }
 
     steps:

.travis.yml

@@ -6,7 +6,7 @@ python:
  - 3.6
  - 3.7
  - 3.8
- - 3.9-dev
+ - 3.9
  - 3.10-dev
 
 matrix:

setup.py

@@ -47,6 +47,7 @@ def local_scheme(version):
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
+        "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3 :: Only",
         "Programming Language :: Python :: Implementation :: CPython",
         "Programming Language :: Python :: Implementation :: PyPy",

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{36, 37, 38, py3}
+    py{36, 37, 38, 39, py3}
 
 [testenv]
 extras =