Add Django 3.0 support

Add the latest version of Django.

Signed-off-by: Andrew Donnellan <[email protected]>
Signed-off-by: Stephen Finucane <[email protected]>
Closes: #311

Author: ajdlinux

patchwork/api/patch.py

@@ -9,7 +9,7 @@
 
 from django.core.exceptions import ValidationError
 from django.utils.text import slugify
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 from rest_framework import status
 from rest_framework.exceptions import APIException
 from rest_framework.exceptions import PermissionDenied

releasenotes/notes/django-3-0-support-b961e7345456b88f.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    `Django 3.0 <https://docs.djangoproject.com/en/dev/releases/3.0/>`_ is
+    now supported.

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 minversion = 3.2
-envlist = pep8,docs,py{36,37,38}-django{22}
+envlist = pep8,docs,py{36,37,38}-django{22,30}
 skipsdist = true
 ignore_basepython_conflict = true
 
@@ -11,6 +11,9 @@ deps =
     django22: django>=2.2,<2.3
     django22: djangorestframework>=3.10,<3.12
     django22: django-filter>=2.1,<3.0
+    django30: django>=3.0,<3.1
+    django30: djangorestframework>=3.10,<3.12
+    django30: django-filter>=2.2,<3.0
 setenv =
     DJANGO_SETTINGS_MODULE = patchwork.settings.dev
     PYTHONDONTWRITEBYTECODE = 1