Removed AggregationOptions.OutputMode.toNew abstract method, moving to a private method on AggregationOptions.  This placates CLIRR.
Added another CLIRR exclusion
Renamed MongoServerSelectionFailureException to MongoServerSelectionException
Added MongoServerSelectionException to driver-compat
Reduced visibility of AggregationOptions.Builder constructor to private
Reduced visibility of WriteResult constructor