feat(json-stream): add completed getter to parser
feat(json-stream): add completed getter to parser

stardazed/stardazed,stardazed/stardazed-tx,stardazed/stardazed,stardazed/stardazed-tx,zenmumbler/libzm,zenmumbler/libzm,zenmumbler/stardazed-tx,stardazed/stardazed-tx,zenmumbler/libzm,zenmumbler/stardazed-tx,zenmumbler/stardazed-tx,zenmumbler/stardazed-tx,zenmumbler/libzm