Python/Django compatibility updates (encode#8288)

* Update python and django versions in tox.ini

* Update  python requires in setup.py

* Update tox.ini

Co-authored-by: Tom Christie <[email protected]>

Author: 2 people

setup.py

@@ -83,7 +83,7 @@ def get_version(package):
     packages=find_packages(exclude=['tests*']),
     include_package_data=True,
     install_requires=["django>=2.2", "pytz"],
-    python_requires=">=3.5",
+    python_requires=">=3.6",
     zip_safe=False,
     classifiers=[
         'Development Status :: 5 - Production/Stable',

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 envlist =
-       {py35,py36,py37}-django22,
+       {py36,py37,py38,py39}-django22,
        {py36,py37,py38,py39}-django31,
        {py36,py37,py38,py39,py310}-django32,
        {py38,py39,py310}-{django40,djangomain},