Modernize .travis.yml and fix the list of suppored Python versions

.travis.yml

@@ -1,12 +1,16 @@
 language: python
-sudo: false
-env:
-    - TOXENV=py26
-    - TOXENV=py27
-    - TOXENV=py33
+dist: xenial
+python:
+  - 2.7
+  - 3.5
+  - 3.6
+  - 3.7
 install:
-    - travis_retry pip install tox
+  - pip install zope.testrunner coverage coveralls
 script:
-    - tox
+  - coverage run -m zope.testrunner --test-path=src --auto-color --auto-progress
+  - coverage report
+after_success:
+  - coveralls
 notifications:
-    email: false
+  email: false

CHANGES.rst

@@ -4,7 +4,9 @@ Change History
 1.0.1 (unreleased)
 ~~~~~~~~~~~~~~~~~~
 
-- Nothing changed yet.
+- Add support for Python 3.6, 3.7.
+
+- Dropped Python 2.6 and 3.3 from Travis CI.
 
 
 1.0.0 (2017-01-04)

setup.py

@@ -56,11 +56,13 @@ def read_file(filename):
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3.5',
+        'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: Implementation :: CPython',
         'Natural Language :: English',
         'Operating System :: OS Independent',
         'Topic :: Internet :: WWW/HTTP',
-        'Topic :: Software Development'
+        'Topic :: Software Development',
         ],
       packages=find_packages('src'),
       package_dir = {'': 'src'},

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = coverage-clean, py27, py35, coverage-report
+envlist = coverage-clean, py27, py35, py36, py37, coverage-report
 
 [testenv]
 commands =