Drop support for outdated Django versions

.travis.yml

@@ -11,45 +11,21 @@ addons:
 
 matrix:
   include:
-    - python: 3.5
-      env: TOXENV=py35-django-111
-    - python: 3.5
-      env: TOXENV=py35-django-20
-    - python: 3.5
-      env: TOXENV=py35-django-21
     - python: 3.5
       env: TOXENV=py35-django-22
     - python: 3.5
       env: TOXENV=py35-django-30
 
-    - python: 3.6
-      env: TOXENV=py36-django-111
-    - python: 3.6
-      env: TOXENV=py36-django-20
-    - python: 3.6
-      env: TOXENV=py36-django-21
     - python: 3.6
       env: TOXENV=py36-django-22
     - python: 3.6
       env: TOXENV=py36-django-30
 
-    - python: 3.7
-      env: TOXENV=py37-django-111
-    - python: 3.7
-      env: TOXENV=py37-django-20
-    - python: 3.7
-      env: TOXENV=py37-django-21
     - python: 3.7
       env: TOXENV=py37-django-22
     - python: 3.7
       env: TOXENV=py37-django-30
 
-    - python: 3.8
-      env: TOXENV=py38-django-111
-    - python: 3.8
-      env: TOXENV=py38-django-20
-    - python: 3.8
-      env: TOXENV=py38-django-21
     - python: 3.8
       env: TOXENV=py38-django-22
     - python: 3.8
@@ -70,5 +46,5 @@ deploy:
   on:
     repo: jjkester/django-auditlog
     branch: stable
-    condition: $TOXENV = py36-django-20
+    condition: $TOXENV = py38-django-30
   edge: true

docs/source/installation.rst

@@ -12,9 +12,9 @@ The repository can be found at https://github.com/jjkester/django-auditlog/.
 **Requirements**
 
 - Python 3.5 or higher
-- Django 1.11 or higher
+- Django 2.2 or higher
 
-Auditlog is currently tested with Python 2.7 and 3.4 and Django 1.8, 1.9 and 1.10. The latest test report can be found
+Auditlog is currently tested with Python 3.5 - 3.8 and Django 2.2 and 3.0. The latest test report can be found
 at https://travis-ci.org/jjkester/django-auditlog.
 
 Adding Auditlog to your Django application

tox.ini

@@ -1,8 +1,5 @@
 [tox]
 envlist =
-    {py35,py36,py37,py38}-django-111
-    {py35,py36,py37,py38}-django-20
-    {py35,py36,py37,py38}-django-21
     {py35,py36,py37,py38}-django-22
     {py36,py37,py38}-django-30
 
@@ -11,9 +8,6 @@ setenv =
     PYTHONPATH = {toxinidir}:{toxinidir}/auditlog
 commands = coverage run -p --source auditlog runtests.py
 deps =
-    django-111: Django>=1.11,<2.0
-    django-20: Django>=2.0,<2.1
-    django-21: Django>=2.1,<2.2
     django-22: Django>=2.2,<2.3
     django-30: Django>=3.0,<3.1
     -r{toxinidir}/requirements.txt