Changed: JS projections do not longer receive a projection position to avoid
unnecessary json handling
Optimization: minor performance improvements related to json serialization
Merge branch 'dev' of github.com:EventStore/EventStore into dev
Changed: message order in event readers changed to request next chunk of data
as soon as possible. checkpointTag comparison optimization. Fixed
GetStateWorkItem injecting string.Empty correlation id to early. Fixed
projection subscription hanging after a big checkpoint.
StagedProcessingQueue.cs optimized to avoid expensive HashSet building on each
iteration
Merge branch 'dev' of github.com:EventStore/EventStore into dev