Add support for Django 3.0

.travis.yml

@@ -4,10 +4,10 @@ dist: xenial
 python:
   - "3.6"
   - "3.7"
+  - "3.8"
 env:
-  - DJANGO=20
-  - DJANGO=21
   - DJANGO=22
+  - DJANGO=30
   - DJANGO=master
 
 matrix:
@@ -56,7 +56,7 @@ jobs:
       node_js: lts/*
       cache: npm
     - stage: deploy
-      python: "3.7"
+      python: "3.8"
       install: skip
       script: skip
       after_success: true
@@ -71,7 +71,7 @@ jobs:
     - stage: deploy
       language: node_js
       node_js: lts/*
-      python: "3.7"
+      python: "3.8"
       install: skip
       script: skip
       after_success: true

setup.cfg

@@ -21,7 +21,7 @@ classifier =
 include_package_data = True
 packages = django_select2
 install_requires =
-    django>=2.0
+    django>=2.2
     django-appconf>=0.6.0
 setup_requires =
     setuptools_scm
@@ -53,14 +53,13 @@ addopts = --cov=django_select2 --cov-report xml
 DJANGO_SETTINGS_MODULE=tests.testapp.settings
 
 [tox:tox]
-envlist = py{35,36,37}-dj{22,21,20,master},docs
+envlist = py{36,37,38}-dj{22,30,master},docs
 
 [testenv]
 passenv=CI
 deps =
-    dj20: https://github.com/django/django/archive/stable/2.0.x.tar.gz#egg=django
-    dj21: https://github.com/django/django/archive/stable/2.1.x.tar.gz#egg=django
-    dj22: https://github.com/django/django/archive/stable/2.2.x.tar.gz#egg=django
+    dj22: django~=2.2
+    dj30: django~=3.0
     djmaster: https://github.com/django/django/archive/master.tar.gz#egg=django
 commands = python setup.py test