ByteConversionSink class

The ByteConversionSink provides an interface for converters to efficiently transmit byte data.

Instead of limiting the interface to one non-chunked list of bytes it accepts its input in chunks (themselves being lists of bytes).

This abstract class will likely get more methods over time. Implementers are urged to extend or mix in ByteConversionSinkBase to ensure that their class covers the newly added methods.