Update/django v4 (#78)

Add support for Django v4

.github/workflows/ci.yml

@@ -11,14 +11,14 @@ jobs:
     strategy:
       max-parallel: 4
       matrix:
-        django-version: [2.2.27, 3.2.12]
+        django-version: [2.2.27, 3.2.12, 4.0.2]
 
     steps:
       - uses: actions/checkout@v2
-      - name: Set up Python 3.7
+      - name: Set up Python 3.9
         uses: actions/setup-python@v2
         with:
-          python-version: "3.7"
+          python-version: "3.9"
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip

vote/apps.py

@@ -1,5 +1,5 @@
 from django.apps import AppConfig as BaseConfig
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 
 
 class VoteAppConfig(BaseConfig):

vote/managers.py

@@ -3,7 +3,7 @@
 from django.db.utils import OperationalError
 from django.contrib.contenttypes.fields import GenericRelation
 from django.contrib.contenttypes.models import ContentType
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 
 from vote.utils import instance_required, add_field_to_objects
 

vote/signals/__init__.py

@@ -1,4 +1,4 @@
 from django.dispatch import Signal
 
 
-post_voted = Signal(providing_args=["obj", "user", "action"])
+post_voted = Signal()