Update to newest versions + Test Python 3.8 + drop testing Python 2.

We cannot test on Python 2 any more because the current zope.security
version requires Sphinx >= 2 for Python 3 but Sphinx < 2 for Python 2
so there is no version we could pin to which can be used across Python
2 and 3.

.travis.yml

@@ -1,16 +1,10 @@
 language: python
 python:
-    - 2.7
     - 3.5
     - 3.6
-    - pypy
+    - 3.7
+    - 3.8
     - pypy3
-matrix:
-    include:
-        - python: "3.7"
-          dist: xenial
-        - python: "3.8"
-          dist: xenial
 install:
     - pip install -U setuptools==$(awk '$1 == "setuptools" {print $3}' ztk-versions.cfg)
     - pip install -U six==$(awk '$1 == "six" {print $3}' ztk-versions.cfg)

README.rst

@@ -11,6 +11,8 @@ The Zope Toolkit
 The Zope Toolkit is a set of libraries maintained by the Zope project for
 building web applications, web frameworks and application servers.
 
+It supports Python 3.5 up to 3.8 and PyPy 3.
+
 This directory contains the definition of the Zope Toolkit in the file
 ``ztk.cfg``. It specifies the list of packages included in the ZTK and
 packages which are under review for inclusion.

ztk-versions.cfg

@@ -5,20 +5,20 @@ zope.applicationcontrol = 4.2.0
 zope.authentication = 4.4.0
 zope.browser = 2.3
 zope.browsermenu = 4.4
-zope.browserpage = 4.3.0
-zope.browserresource = 4.3
+zope.browserpage = 4.4.0
+zope.browserresource = 4.4
 zope.cachedescriptors = 4.3.1
 zope.catalog = 4.2.1
-zope.component = 4.5
+zope.component = 4.6
 zope.componentvocabulary = 2.2.0
 zope.configuration = 4.3.1
-zope.container = 4.2.2
+zope.container = 4.3.0
 zope.contentprovider = 4.2.1
-zope.contenttype = 4.4
+zope.contenttype = 4.5.0
 zope.copy = 4.2
 zope.copypastemove = 4.1.0
 zope.datetime = 4.2.0
-zope.deferredimport = 4.3
+zope.deferredimport = 4.3.1
 zope.deprecation = 4.4.0
 zope.dottedname = 4.3
 zope.dublincore = 4.2.0
@@ -27,27 +27,27 @@ zope.event = 4.4
 zope.exceptions = 4.3
 zope.filerepresentation = 4.2.0
 zope.formlib = 4.6.0
-zope.hookable = 4.2.0
-zope.i18n = 4.6.2
-zope.i18nmessageid = 4.3.1
-zope.index = 4.4.0
-zope.interface = 4.6.0
+zope.hookable = 5.0.0
+zope.i18n = 4.7.0
+zope.i18nmessageid = 5.0.0
+zope.index = 5.0.0
+zope.interface = 4.7.1
 zope.intid = 4.3.0
 zope.keyreference = 4.2.0
 zope.lifecycleevent = 4.3
 zope.location = 4.2
 zope.login = 2.1.0
 zope.mimetype = 2.4.0
 zope.minmax = 2.2.0
-zope.pagetemplate = 4.4.1
+zope.pagetemplate = 4.5.0
 zope.password = 4.3.1
 zope.pluggableauth = 2.3.0
 zope.principalannotation = 4.3.0
 zope.principalregistry = 4.2.0
 zope.processlifetime = 2.3.0
-zope.proxy = 4.3.1
+zope.proxy = 4.3.3
 zope.ptresource = 4.2.0
-zope.publisher = 5.0.1
+zope.publisher = 5.1.1
 zope.ramcache = 2.3
 zope.schema = 4.9.3
 zope.security = 4.3.1
@@ -58,24 +58,24 @@ zope.site = 4.2.2
 zope.size = 4.3
 zope.structuredtext = 4.3
 zope.tal = 4.4
-zope.tales = 5.0
+zope.tales = 5.0.1
 zope.testing = 4.7
-zope.testrunner = 5.0
+zope.testrunner = 5.1
 zope.traversing = 4.3.1
 zope.viewlet = 4.2.1
 
 # Direct dependencies
-BTrees = 4.5.1
-persistent = 4.4.3
+BTrees = 4.6.1
+persistent = 4.5.1
 python-gettext = 4.0
-pytz = 2018.9
-setuptools = 41.0.0
-six = 1.12.0
-transaction = 2.4.0
+pytz = 2019.3
+setuptools = 45.2.0
+six = 1.14.0
+transaction = 3.0.0
 
 # zope.password needs these
-bcrypt = 3.1.6
-cffi = 1.12.2
+bcrypt = 3.1.7
+cffi = 1.14.0
 pycparser = 2.19
 
 # Python2-only
@@ -84,60 +84,65 @@ zope.untrustedpython = 4.0.0
 RestrictedPython = 3.6.0
 
 # Testing dependencies
-ZConfig = 3.4.0
+ZConfig = 3.5.0
 ZODB = 5.5.1
 argparse = 1.4.0
-colorama = 0.4.1
+colorama = 0.4.3
 extras = 1.0.0
 fixtures = 3.0.0
 linecache2 = 1.0.0
 manuel = 1.10.1
-pbr = 5.1.3
-pyparsing = 2.4.0
+pbr = 5.4.4
+pyparsing = 2.4.6
 python-mimeparse = 1.6.0
 python-subunit = 1.3.0
 testtools = 2.3.0
 traceback2 = 1.4.0
 unittest2 = 1.1.0
-zc.lockfile = 1.4
+zc.lockfile = 2.0
 zdaemon = 4.3
-zodbpickle = 1.0.3
+zodbpickle = 2.0.0
 
 
 # Testing tools
-coverage = 4.5.3
+coverage = 5.0.3
 nose = 1.3.7
 
 # Documentation dependencies
-# We have to keep a version < 2 to still support Python 2
-Sphinx = 1.8.5
-docutils = 0.14
-imagesize = 1.1.0
+Sphinx = 2.4.0
+docutils = 0.16
+imagesize = 1.2.0
 alabaster = 0.7.12
-babel = 2.6.0
-Jinja2 = 2.10.1
+babel = 2.8.0
+Jinja2 = 2.11.1
 MarkupSafe = 1.1.1
-Pygments = 2.3.1
-snowballstemmer = 1.2.1
-lxml = 4.4.1
+Pygments = 2.5.2
+snowballstemmer = 2.0.0
+lxml = 4.5.0
 repoze.sphinx.autointerface = 0.8
-requests = 2.21.0
-certifi = 2019.3.9
-urllib3 = 1.24.1
+requests = 2.22.0
+certifi = 2019.11.28
+urllib3 = 1.25.8
 idna = 2.8
 chardet = 3.0.4
-sphinxcontrib-programoutput = 0.14
-sphinxcontrib-websupport = 1.1.0
+sphinxcontrib-applehelp = 1.0.1
+sphinxcontrib-devhelp = 1.0.1
+sphinxcontrib-htmlhelp = 1.0.2
+sphinxcontrib-jsmath = 1.0.1
+sphinxcontrib-programoutput = 0.15
+sphinxcontrib-qthelp = 1.0.2
+sphinxcontrib-serializinghtml = 1.1.3
+sphinxcontrib-websupport = 1.2.0
 sphinx-rtd-theme = 0.4.3
-packaging = 19.0
-typing = 3.6.6
+packaging = 20.1
+typing = 3.7.4.1
 z3c.recipe.sphinxdoc = 1.1.0
 
 # ZTK buildout dependencies
 collective.recipe.cmd = 0.11
 mr.developer = 2.0.0
 z3c.checkversions = 1.1
 z3c.recipe.compattest = 1.0
-zc.buildout = 2.13.1
+zc.buildout = 2.13.2
 zc.recipe.egg = 2.0.7
-zc.recipe.testrunner = 2.0.0
+zc.recipe.testrunner = 2.1