* Generics (not completed yet)
	java's collections return null when an item does not exist in the collection whereas .NET throws exception.
		-->SupportClass.Dictionary
	java's Set can be accessed with indexer( myset[0] )
		-->SupportClass.Set

* IEquatable<T> (not completed yet)

* "foreach" instead of "GetEnumerator/MoveNext" (not completed yet)

* LUCENENET-172 (fix for unexceptional exceptions ecountered in FastCharStream)

* LUCENENET-266 Refactoring SupportClass

* Obsolete Similarity.Net removed (Query.Net replaces it)

*   
   - SegmentInfos.FindSegmentsFile.DoBody 
   - CachingWrapperFilter.FilterCache.MergeDeletes
   - FilteredDocIdSet.Match
   - FilteredDocIdSetIterator.Match 
  changed from abstract method to Func<..>  to be able to remove weird AnonymousClassXXXX's
  
* Filter.Bits(Obsolete) removed.

* LUCENENET-438 JavaDoc are turned into XML Doc Comments
* LUCENENET-439 fix exception re-throws
* LUCENENET-435 fix up the test-suite for Lucene.Net Core lib. 
* LUCENENET-436 fix up deprecated code. 
* LUCENENET-431 Spatial.Net Cartesian won't find docs in radius in certain cases
* LUCENENET-427 Provide limit on phrase analysis in FastVectorHighlighter (LUCENE-3234)

* Contrib
 - ChainedFilter.cs
 
  
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A few API changes like:
* StopAnalyzer(List<string> stopWords)
* Query.ExtractTerms(ICollection<string>)
* TopDocs.TotalHits, TopDocs.ScoreDocs