Update package metadata / requirements

Author: Bouke

setup.py

@@ -6,29 +6,28 @@
     description='Django sessions with a foreign key to the user',
     long_description=open('README.rst').read(),
     author='Bouke Haarsma',
-    author_email='bouke@webatoom.nl',
+    author_email='bouke@haarsma.eu',
     url='http://github.com/Bouke/django-user-sessions',
     download_url='https://pypi.python.org/pypi/django-user-sessions',
     license='MIT',
     packages=find_packages(exclude=('example', 'tests',)),
-    install_requires=['Django>=1.11'],
+    install_requires=['Django>=2.2'],
     include_package_data=True,
     classifiers=[
         'Development Status :: 5 - Production/Stable',
         'Environment :: Web Environment',
         'Framework :: Django',
-        'Framework :: Django :: 1.11',
-        'Framework :: Django :: 2.0',
+        'Framework :: Django :: 2.2',
+        'Framework :: Django :: 3.0',
         'Intended Audience :: Developers',
         'License :: OSI Approved :: MIT License',
         'Operating System :: OS Independent',
         'Programming Language :: Python',
-        'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 3.7',
+        'Programming Language :: Python :: 3.8',
         'Topic :: Security',
     ],
 )