Removed combine methods from CoGroup function and some minor improvements.
Improved Java examples
Completed, updated, and improved JavaDocs of Java API
Added UnsortedGrouping to separate Grouping methods from SortedGrouping methods
various fixes
Substract only 15% from TM heap for yarn, capped at 500MB
Fix NullPointer exceptions in SemanticPropsUtil
Improved error messages and exceptions on non-serializable objects.
Add workset iteration translation tests.
Add check that solution set is joined with on correct keys.