HSEARCH-1345 Adding JavaDoc for QueryBuilder and QueryContextBuilder#forEntity()
HSEARCH-1346 Make Facet.count not part of Facet equality

Faciliates FacetManager.getSelectedFacets() / .getFacets() mixed usage
HSEARCH-703 Enabling queries for unindexed types with indexed sub-types
HSEARCH-436 Javadoc fixes and clarifications
HSEARCH-436 Code cleanup
HSEARCH-436 Moving LeakingOptimizer into the test util package of the engine module
HSEARCH-436 Defining the metamodel interfaces
HSEARCH-436 HSEARCH-904 Introducing a way for bridges to report the generated field names
HSEARCH-436 Deprecating getAllIndexesManager() and replacing it with getIndexManagerHolder()
HSEARCH-436 Replacing PropertiesMetadata with proper objects.