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New features:
- Related items widget: show a recently used dropdown, but do not activate it.
plone.app.relationfield itself is activating the "recently used" feature.
The "recently used" dropdown is only available for Mockup 2.6.3+.
[thet]
Bug fixes:
- Add Python 2 / 3 compatibility
[pbauer]
- Marked unstable robotframework test as noncritical.
And maybe fix it by using keyword ``Wait Until Page Does Not Contain Element``.
[maurits]