Explain the motivations behind this package.

CHANGES.txt

@@ -5,69 +5,8 @@ CHANGES
 3.7.0 (unreleased)
 ------------------
 
-- Remove long-time deprecated IContentContainer class.
+- Split this package off ``zope.app.container``. This package is
+  intended to have far less dependencies than ``zope.app.container``.
+  It is currently still indirectly pulling in a lot of stuff that is
+  not in fact needed, but we're working on this.
 
-3.6.2 (2008-10-21)
-------------------
-
-- Fixed bug in ``_zope_app_container_contained.c``.
-
-3.6.1 (2008-10-15)
-------------------
-
-- Reimplemented the BTreeContainer so that it directly accesses the btree
-  methods (removed an old #TODO)
-
-- Removed usage of deprecated LayerField.
-
-- Made C code compatible with Python 2.5 on 64bit architectures.
-
-- Fixed bug: Error thrown during __setitem__ for an ordered container
-  leaves bad key in order
-
-- Fixed https://bugs.launchpad.net/zope3/+bug/238579,
-  https://bugs.launchpad.net/zope3/+bug/163149: Error with unicode
-  traversing
-
-- Fixed https://bugs.launchpad.net/zope3/+bug/221025: The Adding menu
-  is sorted with translated item by using a collator (better localized
-  sorting)
-
-- Fixed https://bugs.launchpad.net/zope3/+bug/227617:
-    - prevent the namechooser from failing on '+', '@' and '/'
-    - added tests in the namechooser
-    - be sure the name chooser returns unicode
-
-- Fixed https://bugs.launchpad.net/zope3/+bug/175388: The setitem's
-  size modification is now done in ``setitemf``: setting an existing
-  item does not change the size, and the event subscribers should see
-  the new size instead of the old size.
-
-3.6.0 (2008-05-06)
-------------------
-
-- Added an ``IBTreeContainer`` interface that allows an argument to the
-  ``items``, ``keys``, and ``values`` methods with the same semantics as for
-  a BTree object.  The extended interface is implemented by the
-  ``BTreeContainer`` class.
-
-3.5 (2007-10-11)
-----------------
-
-- Updated bootstrap script to current version.
-
-- Store length of ``BTreeContainer`` in its own ``Length`` object for faster
-  ``__len__`` implementation of huge containers.
-
-- Send ``IObjectModifiedEvent`` when changing the title through the
-  ``@@contents.html`` view.
-  This fixes https://bugs.edge.launchpad.net/zope3/+bug/98483.
-
-- Resolve ``ZopeSecurityPolicy`` and ``IRolePermissionManager`` deprecation
-  warning.
-
-3.4 (2007-04-22)
-----------------
-
-- Initial release as a separate project, corresponds to ``zope.app.container``
-  from Zope 3.4.0a1.