Revert "increment version and update python version required"

This reverts commit 30aeacf.

setup.py

@@ -4,49 +4,49 @@
 
 here = os.path.abspath(os.path.dirname(__file__))
 
-with open(os.path.join(here, "README.md"), "r", encoding="utf-8") as ffile:
+with open(os.path.join(here, 'README.md'), 'r', encoding='utf-8') as ffile:
     README = ffile.read()
 
 setup(
-    name="django-walletpass",
-    python_requires=">=3.6.0",
-    version="3.0",
-    author="Develatio Technologies S.L.",
-    author_email="[email protected]",
+    name='django-walletpass',
+    python_requires='>=3.6.0',
+    version='3.0',
+    author='Develatio Technologies S.L.',
+    author_email='[email protected]',
     packages=find_packages(),
     include_package_data=True,
-    url="http://github.com/develatio/django-walletpass/",
-    license="BSD",
+    url='http://github.com/develatio/django-walletpass/',
+    license='BSD',
     install_requires=[
-        "Django>=2.0",
-        "cryptography>=2.4.2",
-        "aioapns~=2.2",
-        "pyopenssl",
-        "djangorestframework>=3.8",
+        'Django>=2.0',
+        'cryptography>=2.4.2',
+        'aioapns~=2.2',
+        'pyopenssl',
+        'djangorestframework>=3.8',
     ],
-    description="Django .pkpass builder, server and push notifications",
+    description='Django .pkpass builder, server and push notifications',
     long_description=README,
-    long_description_content_type="text/markdown",
+    long_description_content_type='text/markdown',
     classifiers=[
-        "Intended Audience :: Developers",
-        "Topic :: Software Development :: Libraries :: Python Modules",
-        "Development Status :: 4 - Beta",
-        "Environment :: Web Environment",
-        "Framework :: Django",
-        "Intended Audience :: Developers",
-        "Intended Audience :: System Administrators",
-        "License :: OSI Approved :: MIT License",
-        "License :: OSI Approved :: BSD License",
-        "Operating System :: OS Independent",
-        "Programming Language :: Python",
-        "Programming Language :: Python :: 3.5",
-        "Programming Language :: Python :: 3.6",
-        "Programming Language :: Python :: 3.7",
-        "Programming Language :: Python :: Implementation :: CPython",
-        "Topic :: Software Development :: Internationalization",
-        "Topic :: Software Development :: Localization",
-        "Topic :: Internet :: WWW/HTTP",
-        "Topic :: Internet :: WWW/HTTP :: Dynamic Content",
-        "Topic :: Software Development :: Libraries :: Application Frameworks",
+        'Intended Audience :: Developers',
+        'Topic :: Software Development :: Libraries :: Python Modules',
+        'Development Status :: 4 - Beta',
+        'Environment :: Web Environment',
+        'Framework :: Django',
+        'Intended Audience :: Developers',
+        'Intended Audience :: System Administrators',
+        'License :: OSI Approved :: MIT License',
+        'License :: OSI Approved :: BSD License',
+        'Operating System :: OS Independent',
+        'Programming Language :: Python',
+        'Programming Language :: Python :: 3.5',
+        'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 3.7',
+        'Programming Language :: Python :: Implementation :: CPython',
+        'Topic :: Software Development :: Internationalization',
+        'Topic :: Software Development :: Localization',
+        'Topic :: Internet :: WWW/HTTP',
+        'Topic :: Internet :: WWW/HTTP :: Dynamic Content',
+        'Topic :: Software Development :: Libraries :: Application Frameworks',
     ],
 )