Roadmap (#840)

* Add roadmap.

* Sketch a roadmap.

* Link to plone release schedule

* - need to pull in ``tempstorage`` in the ``docs`` setup extra to make it work

* - condense roadmap to better highlight the differences

Co-authored-by: Jens Vagelpohl <jens@netz.ooo>

buildout.cfg

@@ -147,7 +147,6 @@ recipe = zc.recipe.egg
 eggs =
     Zope[docs]
     Sphinx
-    tempstorage
 scripts =
     sphinx-build
 

docs/index.rst

@@ -10,6 +10,7 @@ This is the official home for all Zope documentation.
    operation
    migrations/index
    maintenance
+   roadmap
    changes
    zopebook/index
    zdgbook/index

docs/roadmap.rst

@@ -0,0 +1,63 @@
+Zope development roadmap
+========================
+
+The Zope development and support roadmap. **Last updated: June 2020**
+
+
+Zope 2.13 - previous version
+----------------------------
+
+* Python support:
+
+    - 2.7
+
+* Support schedule:
+
+    - Full support: -
+    - Bug fixes: -
+    - Security fixes: until 12/31/2020 [1]_
+
+
+Zope 4 - stable version
+-----------------------
+
+* Python support:
+
+    - 2.7
+    - 3.5
+    - 3.6
+    - 3.7
+    - 3.8
+
+* Support schedule:
+
+    - Full support: until Zope 5.0 is released, planned for September 2020
+    - Bug fixes: until 12/31/2021
+    - Security fixes: until 12/31/2022 [2]_
+
+
+Zope 5 - development version
+----------------------------
+
+* Python support:
+
+    - 3.6
+    - 3.7
+    - 3.8
+    - 3.9 (may wait until Zope 5.1)
+
+* Support schedule:
+
+    - Full support: starting with the Zope 5.0 release, planned
+      for September 2020
+    - Bug fixes: TBD
+    - Security fixes: TBD
+
+
+See the `Plone release schedule <https://plone.org/download/release-schedule>`_
+for details about Plone version support. Zope will track some of their
+milestones with its own releases.
+
+
+.. [1] End of security fix support for Plone releases based on Zope 2.13
+.. [2] End of security fix support for Plone releases based on Zope 4

setup.py

@@ -129,6 +129,7 @@ def _read_file(filename):
             'Sphinx',
             'sphinx_rtd_theme',
             'repoze.sphinx.autointerface',
+            'tempstorage',
         ],
         'wsgi': [
             'Paste',