Modernize Python versions

- add support for Python 3.8
- drop support for Python 3.4

modified:   .travis.yml
modified:   CHANGES.rst
modified:   setup.py
modified:   tox.ini
modified:   appveyor.yml

.travis.yml

@@ -1,17 +1,12 @@
 language: python
-sudo: false
 python:
     - 2.7
     - pypy
-    - 3.4
     - 3.5
     - 3.6
+    - 3.7
+    - 3.8
     - pypy3
-matrix:
-    include:
-        - python: 3.7
-          dist: xenial
-          sudo: true
 install:
     - pip install coveralls coverage
     - pip install -e ".[test]"

CHANGES.rst

@@ -5,7 +5,9 @@
 4.0.3 (unreleased)
 ==================
 
-- Nothing changed yet.
+- Add Python 3.8 support.
+
+- Drop Python 3.4 support.
 
 
 4.0.2 (2019-07-11)

appveyor.yml

@@ -3,14 +3,14 @@ environment:
   matrix:
     - python: 27
     - python: 27-x64
-    - python: 34
-    - python: 34-x64
     - python: 35
     - python: 35-x64
     - python: 36
     - python: 36-x64
     - python: 37
     - python: 37-x64
+    - python: 38
+    - python: 38-x64
 
 install:
   - "SET PATH=C:\\Python%PYTHON%;c:\\Python%PYTHON%\\scripts;%PATH%"

setup.py

@@ -58,10 +58,10 @@ def read(*rnames):
         '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',
         'Programming Language :: Python :: Implementation :: CPython',
         'Programming Language :: Python :: Implementation :: PyPy',
         'Natural Language :: English',

tox.ini

@@ -2,10 +2,10 @@
 envlist =
     py27,
     pypy,
-    py34,
     py35,
     py36,
     py37,
+    py38,
     pypy,
     pypy3,
     coverage