sorters::BalancedSplitSorter::partWriter() memory usage was decreased.
detail::LockedStorage: notifications fixes.
detail::LockedStorage::closeError() implementation.
detail: LockedStorage refactoring + AbstractQueue implementation.
LockedStorage test suite refactoring.
detail::Queue: integration with AbstractQueue + closeError() implementation.
sorters::BalancedSplitSorter: exception transportation between worker threads implementation.