[no issue] set version 13.0-streaming-SNAPSHOT for feature/streaming branch
[no issue] bump to 13.1-streaming-SNAPSHOT
[no issue] add Coder#transform, Coder#biject and corresponding ComposableCoder versions, and change MappedCoder to CoderBijection
[issue21789] add JSON/Avro streaming functionality for consuming large datasets piecemeal using Interchange
Merge branch 'feature/2013/streaming' into develop