Confirm compatibility for Django 2.2 & Update changelogs

Author: joehybird

CHANGELOG.rst

@@ -4,8 +4,9 @@ Changelog
 0.6.3 (unreleased)
 ------------------
 
-- Nothing changed yet.
-
+- Confirm compatibility with Django 2.2
+- Compatibility with Django 2.1 added.
+  From @tsouvarev work : https://github.com/python-babel/django-babel/pull/45
 
 0.6.2 (2017-12-18)
 ------------------

tox.ini

@@ -1,5 +1,8 @@
 [tox]
-envlist = py{35,36,37}-django{21,master}, py{27,34,35,36}-django{18,111,20}, lint, docs
+envlist = py{27,34,35,36}-django{18,111},
+          py{35,36,37}-django{20,21,22},
+          py{36,37}-django{master},
+          lint, docs
 
 [testenv]
 deps =
@@ -12,6 +15,7 @@ deps =
     django111: Django>=1.11,<2.0
     django20: Django>=2.0,<2.1
     django21: Django>=2.1,<2.2
+    django22: Django>=2.2,<3
     djangomaster: https://github.com/django/django/archive/master.tar.gz#egg=Django
 commands = py.test {posargs}