Reafactoring and cleaning code as the MapReduce idea settles in
Documentif the MapReduce class
Moving things around a bit
Adding unit test for MapReduce
Improving errors in MapReduce and adding more unit testing
Adding a bit more of documentation
Adding more docs and making it possible to get the stack of map-reducers
Unit testing the mapReduce() method and chanigng the implementation of
the ResultSetDecorator, as IteratorIterator is segfaulty
Adding a test for the result set decorator