only support python >= 3.5

python 3.4 is unsupported and we should focus on offering stable
features than backporting some code to this version

README.rst

@@ -28,7 +28,7 @@ The documentation is hosted at http://docs.gunicorn.org.
 Installation
 ------------
 
-Gunicorn requires **Python 3.x >= 3.4**.
+Gunicorn requires **Python 3.x >= 3.5**.
 
 Install from PyPI::
 

docs/source/index.rst

@@ -23,7 +23,7 @@ Features
 * Simple Python configuration
 * Multiple worker configurations
 * Various server hooks for extensibility
-* Compatible with Python 3.x >= 3.4
+* Compatible with Python 3.x >= 3.5
 
 
 Contents

gunicorn/__init__.py

@@ -3,6 +3,6 @@
 # This file is part of gunicorn released under the MIT license.
 # See the NOTICE for more information.
 
-version_info = (20, 0, 0)
+version_info = (20, 0, 1)
 __version__ = ".".join([str(v) for v in version_info])
 SERVER_SOFTWARE = "gunicorn/%s" % __version__

setup.py

@@ -21,7 +21,6 @@ CLASSIFIERS = [
     'Operating System :: POSIX',
     'Programming Language :: Python',
     'Programming Language :: Python :: 3',
-    'Programming Language :: Python :: 3.4',
     'Programming Language :: Python :: 3.5',
     'Programming Language :: Python :: 3.6',
     'Programming Language :: Python :: 3.7',

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py34, py35, py36, py37, py38, pypy3, lint
+envlist = py35, py36, py37, py38, pypy3, lint
 skipsdist = True
 
 [testenv]