Streaming input

[vigoo]

Earlier versions of the parser supported streaming input which was dropped in favor of using strings directly to maximize performance. We should keep the direct string parsing for use cases where high performance is needed but could also reintroduce support for streaming input:

• Parsing input to be a ZStream of characters
• Syntax converted to sink/pipeline to inject parsing and printing into streams
• Reintroduce the cut operator and the maxDistance modifier to control memory buffering required for backtracking on streams