Added map-reduce for aggregation at more coarse granularity (all, year); refactored result processing into separate class (MixpanelResponseAggregator)
Added map-reduce for aggregation at more coarse granularity (all, year); refactored result processing into separate class (MixpanelResponseAggregator)

noyeitan/cubes,she11c0de/cubes,pombredanne/cubes,cesarmarinhorj/cubes,zejn/cubes,ubreddy/cubes,noyeitan/cubes,zejn/cubes,she11c0de/cubes,jell0720/cubes,zejn/cubes,pombredanne/cubes,cesarmarinhorj/cubes,jell0720/cubes,jell0720/cubes,noyeitan/cubes,ubreddy/cubes,cesarmarinhorj/cubes,ubreddy/cubes,she11c0de/cubes,pombredanne/cubes