Modernize Python versions.

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

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

.travis.yml

@@ -1,25 +1,26 @@
 language: python
-sudo: false
+
 python:
     - 2.7
-    - 3.4
     - 3.5
     - 3.6
+    - 3.7
+    - 3.8-dev
     - pypy
     - pypy3
-matrix:
-    include:
-        - python: "3.7"
-          dist: xenial
-          sudo: true
+
 install:
     - pip install -U pip setuptools
     - pip install -U zope.testrunner coverage coveralls
     - pip install -U -e .[test,buildout]
+
 script:
     - coverage run -m zope.testrunner --test-path=src
+
 after_success:
     - coveralls
+
 notifications:
     email: false
+
 cache: pip

CHANGES.rst

@@ -4,7 +4,9 @@ Changelog
 1.2 (unreleased)
 ----------------
 
-- Nothing changed yet.
+- Add support for Python 3.8.
+
+- Drop support for Python 3.4.
 
 
 1.1 (2018-11-03)

setup.py

@@ -26,10 +26,10 @@
         'Intended Audience :: Developers',
         'License :: OSI Approved :: Zope Public License',
         'Programming Language :: Python :: 2.7',
-        '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

@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    flake8,py27,py34,py35,py36,py37,pypy,pypy3,coverage
+    flake8,py27,py35,py36,py37,py38,pypy,pypy3,coverage
 
 [testenv]
 usedevelop = true