make use of lists implementation

RingBuffer
make use of lists implementation

WorkerPool
make use of lists implementation

Util
make use of lists implementation

SequencerInterface
make use of lists implementation

SequenceGroup(s)
fix in lists implementation
make use of lists implementation

Sequencers
make use of lists implementation

AggregateEventHandler
make use of lists implementation

FixedSequenceGroup
make use of lists implementation

SequencerAggregateInterface