* Dependencies updated (messif-private) due to ObjectFeature class used (TODO:...

* Dependencies updated (messif-private) due to ObjectFeature class used (TODO: Move from messif private to messif public and remove this dependency)
* New method to preparaPPPcode added to MIndexObjectInitializer
* Increased verbosity of toRichString() and other toString() methods
* Parallel kNN query evaluation added
* Support of new DumpObjectsToFilesOperation and TruncateOperation added
* Other refactoring