Package maintenance

- Note Python 3 compatibility in package classifiers
- Add Python 3 environments to travis configuration
- Update Manifest file
- Note Zope 4 / Python 3 compatibility in the Changelog

.travis.yml

@@ -2,7 +2,11 @@ language: python
 sudo: false
 python:
     - 2.7
+    - 3.4
+    - 3.5
+    - 3.6
 install:
+    - pip install -U setuptools==33.1.1
     - python bootstrap.py
     - bin/buildout
 script:

CHANGES.rst

@@ -4,6 +4,10 @@ Changelog
 4.0a4 (unreleased)
 ------------------
 
+- Python 3 compatibility
+
+- Target use with Zope 4:  no longer support 2.13.x.
+
 - `five.globalrequest` got merged into Zope2 itself.
 
 - Use aq_inner before aq_parent at some places to safely get the parent

MANIFEST.in

@@ -1,7 +1,11 @@
 include *.txt
 include *.rst
+include *.cfg
+exclude .*.cfg
 
 recursive-include src *
 
 global-exclude *.pyc
 global-exclude *.pyo
+
+include *.py

setup.py

@@ -34,9 +34,15 @@
         "License :: OSI Approved :: Zope Public License",
         "Operating System :: OS Independent",
         "Programming Language :: Python",
-        "Programming Language :: Python :: 2 :: Only",
+        "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 :: Implementation :: CPython",
+        "Programming Language :: Python :: Implementation :: PyPy",
+        "Topic :: Internet :: WWW/HTTP :: Indexing/Search",
     ],
     install_requires=[
         'setuptools',