------------------
- New ``data-panel-mode`` attribute.
Add ``data-panel-mode`` attribute with possible values ``append`` (default) and ``replace`` for layout panels.
This allows for replacing the layout panel with the page panel instead of appending to it.
[thet]
- Allow tox tests to run single tests e.g. via: ``tox -e plone52-py38 -- -t test_resolve_resource``.
[thet]
- Remove support for Plone 4.3 and 5.0.
[maurits, thet]
- Tests: Refactor buildout configs, use tox, use GitHub actions.
[maurits]
- Format code according to Plone standards: black, isort.
[thet]
- getSite from zope.component.hooks
[ksuess]
- Fix unicode parsing error on Python 3, resulting in empty mosaic page (`480 <https://github.com/plone/plone.app.mosaic/issues/480>`_).
[agitator, maurits]
- Update test setup
[ksuess]