[zope] Zope 4.8 and 5.5 released

On behalf of Zope developer community I am pleased to announce the releases of Zope 4.8 and 5.5. These releases add improved cookie handling (see https://github.com/zopefoundation/Zope/pull/1010) in addition to a few bug fixes. For the full list of changes see the change logs at https://zope.readthedocs.io/en/4.x/changes.html#id1 and https://zope.readthedocs.io/en/latest/changes.html#id1. Installation instructions can be found at https://zope.readthedocs.io/en/4.x/INSTALL.html and https://zope.readthedocs.io/en/latest/INSTALL.html. Jens Vagelpohl