Test against 5.1 and update docs

Author: Suor

README.rst

@@ -22,7 +22,7 @@ And there is more to it:
 Requirements
 ++++++++++++
 
-Python 3.7+, Django 3.2+ and Redis 4.0+.
+Python 3.8+, Django 3.2+ and Redis 4.0+.
 
 
 Installation

setup.py

@@ -38,12 +38,14 @@
         'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: 3.11',
         'Programming Language :: Python :: 3.12',
+        'Programming Language :: Python :: 3.13',
         'Framework :: Django',
         'Framework :: Django :: 3.2',
         'Framework :: Django :: 4.0',
         'Framework :: Django :: 4.1',
         'Framework :: Django :: 4.2',
         'Framework :: Django :: 5.0',
+        'Framework :: Django :: 5.1',
         'Framework :: Django :: 5.2',
 
         'Environment :: Web Environment',

tox.ini

@@ -4,8 +4,8 @@ envlist =
     py{38,39}-dj{32,40},
     py310-dj{32,40,41},
     py311-dj{41,42,50},
-    py312-dj{42,50,52},
-    py313-dj{42,50,52},
+    py312-dj{42,50,51,52},
+    py313-dj{50,51,52},
     pypy310-dj40
 
 [gh-actions]
@@ -34,6 +34,7 @@ deps =
     dj41: Django>=4.1,<4.2
     dj42: Django>=4.2.8,<5.0
     dj50: Django>=5.0,<5.1
+    dj51: Django>=5.1,<5.2
     dj52: Django>=5.2,<5.3
     djmain: git+https://github.com/django/django
     mysqlclient