Django 2.2 support

Author: muhammad-ammar

.travis.yml

@@ -11,6 +11,7 @@ env:
   - DJANGO_VERSION=1.9.x
   - DJANGO_VERSION=1.10.x
   - DJANGO_VERSION=1.11.x
+  - DJANGO_VERSION=2.2.x
 install:
   - pip install tox
 script:
@@ -21,3 +22,6 @@ matrix:
      env: DJANGO_VERSION=master
    - python: "pypy"
      env: DJANGO_VERSION=master
+  include:
+   - python: "3.5"
+     env: DJANGO_VERSION=2.2.x

setup.py

@@ -35,7 +35,7 @@ def read(*parts):
 
 
 install_requires = [
-    'django>=1.8,<2.0',
+    'django>=1.8,<=2.2',
     'babel>=1.3',
     'django-babel>=0.5.1',
     'markey>=0.8,<0.9',

tox.ini

@@ -14,6 +14,8 @@ deps110 =
     https://github.com/django/django/archive/stable/1.10.x.tar.gz#egg=django
 deps111 =
     https://github.com/django/django/archive/stable/1.11.x.tar.gz#egg=django
+deps22 =
+    https://github.com/django/django/archive/stable/2.2.x.tar.gz#egg=django
 master =
     https://github.com/django/django/archive/master.tar.gz#egg=django
 
@@ -69,6 +71,10 @@ deps = {[testenv]deps110}
 basepython = python3.5
 deps = {[testenv]deps111}
 
+[testenv:3.5-2.2.x]
+basepython = python3.5
+deps = {[testenv]deps22}
+
 [testenv:3.5-master]
 basepython = python3.5
 deps = {[testenv]master}
@@ -89,6 +95,10 @@ deps = {[testenv]deps110}
 basepython = pypy
 deps = {[testenv]deps111}
 
+[testenv:pypy-2.2.x]
+basepython = pypy
+deps = {[testenv]deps22}
+
 [docs]
 commands =
     pip install -e {toxinidir}