- In the collection filter portlet, don't count empty values. These cannot be searched via the catalog. Use an empty marker instead (for an example on the ``Subject`` index, see the indexer module). [thet]
1.1.1
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- Fix error with rendering the portlet and having an empty subject. [thet]
1.1
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- Add a subject indexer, which adds EMPTY_MARKER to the index, where no subject is set. Make sure, the EMPTY_MARKER is translated in the portlet. [thet]
1.0
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- Fork from collective.portlet.collectionbysubject and complete refactoring. [thet]