* make tests run on Python 2.7 and in a Zope 4 environment
* add a setup.py
* fix deprecation warnings
* replace license file format (HTML->txt)
* add flake8 and apply it
* add support for Python 3.6, 3.7, 3.8
1.3.1
* Fixed tree_menu example. Thanks to Andy McKay for the patch.
1.3
* Setting a cookie with ZopeTree is optional now. Simply pass set_cookie=0 to the ZopeTree constructor.
* Fixed a security hole in the tree state decompressing mechanism. Previous versions were vulnerable to a denial of service attack using large tree states. Thanks go to Jamie Heilman for reporting the bug and Toby Dickenson for providing a fix.
1.2
* Added optional 'expanded_nodes' argument to ZopeTree constructor. Thanks to Jean Jordaan for suggesting this.
* Changed signature of TreeObjectWrapper constructor. 'path' is an optional argument now.
* Added collapse() method to ZopeTree.Node.
1.1
* It now works on Zope 2.4.
* The unit test was not converted from RevisionManager yet. Fixed.