DocumentExtractor to use the new FieldLoadingVisitor strategy: old method was removed
Update the StringField loading strategy dealing with new FieldCache implementation
[!WARNING!] Reimplement the search engine
DELETE TESTS - which still don't compile in Engine
[temporary] Directly depend on solr-analysis-extras and avoid depending on hibernate-search-analyzers
Change references to IndexReader to DirectoryReader where it makes sense
New filtering logic in FreshReadersProvidedTest
happy