Comment 9 for bug 435516

ZODB3 is no longer in lazr.restful's dependency graph in current versions, presumably as a result of work in Zope. (I have an open MP to use zope.pagetemplate rather than zope.app.pagetemplate - https://code.launchpad.net/~cjwatson/lazr.restful/remove-compat-imports/+merge/375438 - but that doesn't seem necessary to fix this.)