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Bug fixes:
- Fix a circular transitive dependency to `plone.app.querystring`.
New direct dependency explicit on `plone.app.vocabularies`.
Move `plone.app.querystring.catalog.CatalogVocabularyFactory` to `.vocabularies`, move the ZCML to register the factory, move the the test.
Move `plone.app.querystring.utils.parse_query` with new name `parseAndModifyFormquery` to `.queryparser`.
[jensens] (fix-circular-dep-pavocabularies)