Add support for Python 3.9, Django 3.1 and drop unsupported combinations.

.travis.yml

@@ -7,6 +7,7 @@ python:
   - "3.6"
   - "3.7"
   - "3.8"
+  - "3.9"
 install: pip install tox-travis
 script: tox
 branches:

setup.py

@@ -3,7 +3,7 @@ import os
 
 from setuptools import find_packages, setup
 
-VERSION = '0.4.3'
+VERSION = '0.4.4'
 
 setup(
     name="django_reusable_components",
@@ -27,6 +27,7 @@ setup(
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
+        "Programming Language :: Python :: 3.9",
         "Operating System :: OS Independent",
         "Framework :: Django",
         "Framework :: Django :: 1.11",
@@ -34,5 +35,6 @@ setup(
         "Framework :: Django :: 2.1",
         "Framework :: Django :: 2.2",
         "Framework :: Django :: 3.0",
+        "Framework :: Django :: 3.1",
     ],
 )

tox.ini

@@ -3,9 +3,10 @@ envlist =
 	py27-django111
 	py34-django{111,20}
 	py35-django{111,20,21,22}
-	py36-django{111,20,21,22,30}
-	py37-django{111,20,21,22,30}
-	py38-django{111,20,21,22,30}
+	py36-django{111,20,21,22,30,31}
+	py37-django{111,20,21,22,30,31}
+    py38-django{21,22,30,31}
+    py39-django{21,22,30,31}
 	flake8
 	isort
 
@@ -13,9 +14,10 @@ envlist =
 2.7 = py27-django111
 3.4 = py34-django{111,20}
 3.5 = py35-django{111,20,21,22}
-3.6 = py36-django{111,20,21,22,30}
-3.7 = py37-django{111,20,21,22,30}
-3.8 = py38-django{111,20,21,22,30}, flake8, isort
+3.6 = py36-django{111,20,21,22,30,31}
+3.7 = py37-django{111,20,21,22,30,31}
+3.8 = py38-django{21,22,30,31}
+3.9 = py39-django{21,22,30,31}, flake8, isort
 
 [testenv]
 deps =
@@ -26,6 +28,7 @@ deps =
     django21: Django>=2.1,<2.2
     django22: Django>=2.2,<2.3
     django30: Django>=3.0,<3.1
+    django31: Django>=3.1,<3.2
     flake8
     isort
 commands = py.test {posargs}